City, University of London celebrates ninth Dubai graduation ceremony
City, University of London celebrates 9th graduation of students at its Dubai Centre...
Undertaking activities in the traditional areas of aeronautics and flow control as well as emerging disciplines such as bio-fluid mechanics, energy harvesting, renewable energy, micro-fluidics and, bio-mimetics.
Our Research Centre comprises staff with experience of industrial research and application as well as more fundamental research. As well as having consolidated expertise in aerodynamic design, numerical simulation and newly-developed experimental rigs, a significant range of experimental techniques such as three-dimensional Laser-Doppler Velocimetry, volumetric Particle Image Velocimetry, Hot Wire Anemometry, Infrared Thermography and fast-response pressure measurements also exist. These capabilities are exploited within a unique range of wind tunnels, available within the School, and include high speed and low-turbulence wind tunnels, an environmental tunnel together with a water channel.
The Centre's in-house software capabilities are able to address direct numerical simulation; large eddy simulation and Reynolds Averaged Navier-Stokes’ formulations for both compressible and incompressible flows, as well as having a capability to develop parallel implementation. Our proprietary software comprises parallel, state of the art numerical codes able to deal with high fidelity simulations of highly complex configurations, both in terms of numerical algorithms and of advanced modelling solutions.
The Centre has a network of national and international collaborations over a wide range of engineering sectors and European research projects. At present the focus of the research activities share the common challenge relating to the development of small-scale devices to enable large-scale flow field manipulation directed towards the achievement of technological improvements. For example, our current studies include:
Understanding the intrinsic physical phenomena of these issues may lead to a benefit for more general engineering systems and pave the way towards technology that may reflect in the reduction of stratospheric emission of greenhouse gases by aircraft; increased efficiency and power density of renewable energy conversion devices, including opportunities for infinite-endurance embedded health monitors; and flood alleviation using natural mechanisms.
Professor Alfredo Pinelli
Advanced laminar flow enabling technologies (ALFET), Dr Marco Placidi
Considerations in coupling an Euler solver for viscous inviscid interaction, Dr Pradeepa Karnick
Laminar flow control UK (LFC-UK), Dr Chetan Jagadeesh
System advances in nacelle technology aerodynamics (SANTANA), Dr Erwin Ricky Gowree
Aerofoil-wake induced transition in boundary layers (LFC-UK), Dhamotharan Veerasamy
Application of data mining in air traffic forecasting, Judi Guimera Busquets
Controllability of saturating crossflow vortices (LFC-UK), Tobias Backer Dirks
Critical suction physics in laminar flow control (LFC-UK), Barry Crowley
Direct numerical simulation of flow on swept wings, Carlo Suardi
Flow sensing and control with modern imaging technologies and manifold actuators, Mohamed Elshalakani
High fidelity simulation of low pressure turbine, Rohella Muhel
High fidelity simulations of leakage flows in screw compressors, Mohammad Ghasempournejad
Interaction of flows with designed textured walls. Qianhui Li
Multiple scale approach for non-parallel stability (ICASE), Nick Brown
Numerical analysis of instability and coherent structures in vegetated flows, Alessandro Monti
Nature inspired flow sensing and manipulation, Muthukumar Muthuramalingam
Passive and active flow control with distributed adaptive flaplets, Edward Talboyz
Receptivity of the cross-flow boundary layer on a swept leading edge (LFC-UK), Isabella Fumarola
The influence of discrete 3D roughness distributions on the development of the crossflow instability (ALFET), Evelien van Bokhorst
Topics in solar MHD, Abrar Ali
Unraveling the brain hydrodynamics: high-fidelity 3D numerical simulations. Narges Aalinezhad
Investigation and control of dynamic stall of an aerofoil ramp-up motion, Dr Marco Rosti
Shear flow instabilities in stellar objects: linear stability and non-linear evolution. Dr Veronika Witzke
The centre has four wind tunnels one water tunnel and two flight simulators. A supercomputer for numerical work is also available.
This tunnel is exclusively used for studies on laminar turbulent transition. This is due to the extremely low turbulence instensity characterising this facility, which matches high altitude flight conditions. Both 2D and 3D boundary layers studies are carried out in this tunnel. A variety of commercial contract projects use the facility, including collaborations with Airbus and Bombardier, amongst others. This tunnel is part of the United Kingdom's National Wind Tunnel Facility.
Test section: 0.91m x 0.91m x 3m
Maximum velocity: 45 m/s
Reynolds number: 0.034-3.1 million/m
This transonic facility is used mainly for aerospace-related studies, given the high velocity that can be reached in the relatively large (for its speed) test section. Shock-wave-boundary-layer interaction, turbine blade aerodynamics, rocket science and the effect of heat exchange are just a few examples of studies. Numerous research activities are carried out in this facility, alongside a variety of aerospace contact work (Bombardier and Meggit, currently) and undergraduate projects. The tunnel is equipped with a full optical access section, which allows a variety of techniques to be used (e.g. Laser Doppler Anemometry, Stereoscopic Particle Image Velocimetry, flow visualisation). This tunnel is part of the United Kingdom's National Wind Tunnel Facility.
Test section: 0.2m x 0.25m x 0.5m
Mach number: 0.4-2
Reynolds number: up to 20 million/m
This large wind tunnel is mainly used for environmental studies (atmospheric boundary layers, wind load on buildings, etc.) and for commercial applications (wind energy harvesting, race car aerodynamics, etc.) due to the substantial size of its test section. A number of undergraduate and research projects have also been carried out in this tunnel, along with the City University London Wind Turbine Challenge. The tunnel is equipped with optical access, a four-component force balance and a turning floor, which allows the models to be tested at different wind directions.
Test section: 1.12m x 0.81m x 1.78m
Velocity range: 10-45 m/s
Reynolds number: 0.7-3.1 million/m
This wind tunnel is mainly used for research purposes, although a variety of undergraduate labs are also hosted here. This tunnel is equipped with full optical access and a six-component force balance to capture the main aerodynamics loadings. Laser Doppler Anemometry (LDA), Particle Image Velocimetry (PIV), Hot Wire Anemometry (HWA) and numerous flow visualisation techniques are currently in use in this facility.
Test section: 3.0m x 1.5m x 8.0m
Velocity range: 0-25 m/s
Reynolds number: 0-1.7 million/m
This is an ongoing project to construct a working replica of an Airbus A320 series flightdeck. In its present form the simulator correctly replicates the layout of a real A320 with correct pattern sidesticks, throttles, displays, switches, etc. It has a working Flight Management Guidance System with two Multifunction Control Display Units and a glareshield Flight Control Unit. The flight model includes major elements of the Airbus flight envelope protection system such as bank angle limits and "alpha floor" stall protection.
An Instructor Station enables various faults and system failures to be initiated which result in the relevant itemised checklists appearing on the upper ECAM display. Future developments will include a three-projector visual display system.
City's Merlin MP520 simulator is fitted with a two-axis motion system and closed cockpit design for greater immersion. The Merlin is used to provide the link between theory and practice in the study of aerodynamics and the mechanics of flight. Merlin's unique flight software, Excalibur, is a fully non-linear transonic real-time six degrees of freedom aerodynamic application. Designs ranging from single-engined piston to multi-engined turbo fans, or VTOL aircraft can be modelled using the Excalibur data editor and basic aerodynamic, structural and sizing data.
This cluster of supercomputers is mainly used for heavy parallel numerical simulations. The research team run high-fidelity fluid flow simulations in laminar, transitional, and turbulent regimes in aeronautical, geophysical, and biological applications, as well as fundamental studies in fluid-structures interaction, drag-reduction techniques in boundary layers, and numerical algorithms. Most of these simulations are carried out by an in-house code SUSA in Fortran language and occasionally commercial software such as FLUENT and OpenFOAM.
- Main node: 12 cpus (Intel(R) Xeon(R) CPU E5-2620 @ 2.00GHz, 132 GB physical memory, 12 GB swap
- Amun node: 12 cpus (Intel(R) Xeon(R) CPU E5-2630 @ 2.30GHz, 264 GB physical memory, 12 GB swap
- 4 Fast nodes, each: 8 cpus (Intel(R) Xeon(R) CPU E5-2643 @ 3.30GHz, 66 GB physical memory, 12 GB swap
- 32 Normal nodes, each: 12 cpus (Intel(R) Xeon(R) CPU E5-2620 @ 2.00GHz, 66 GB physical memory, 12 GB swap
PhD candidates carry out research in the field of Aerodynamics and Flow Control in the Department of Mechanical Engineering & Aeronautics. Potential research student projects in the field of Aerodynamics and Flow Control are shown below, for more details, click on the name of the project. Find out more about applying to a research degree in this field.
Supervisors at City: Prof Christoph Bruecker
This project is directly related to aerodynamics. It focuses on the further development of wall-shear stress imaging using the PI’s developed method of micropillar sensors. We want to build foils with such sensors, which we can apply to aerofoils in the wind tunnel and at race cars to monitor the flow structure on the wing or surface on-line. Therefore we built micro-structured surfaces, which we read out optically using fibre-optics and high-speed cameras. This is a 3 years program with BAE Systems and applications of the foil on our models and in their wind tunnel. A further application is envisioned in Formula 1 car aerodynamics. We use thin-film silicon wafer technology, optical fibre coupling, imaging, VR-imaging, on-line flow mapping for the aerodynamics of separated flows. The project has contact with world-renowned institutes in this field.
Supervisor at City: Prof. A. Pinelli, Prof. C. Bruecker and Dr. M. Omidyeganeh
This project aims at studying the effect of modulating the rebound of a vortex against a wall by using specifically designed coatings made of ciliated canopies. Vortex interactions with wall is one of the building bricks of many technological and fundamental situations that encompass wall bounded turbulence, mixing and heat transfer in IC engines and chemical reactors, etc. The thesis will be of both numerical and experimental character using state of the art tools that include Direct Numerical Simulation of flow around complex geometries and particle image velocimetry in water tunnel experiments.
Supervisors at City: Dr M. Omidyeganeh, Prof A. Pinelli, Prof P. Kyriacou - Co-supervisor at Great-Ormond Street Hospital: Dr K. Aquilina
This project aims at performing high-fidelity simulations to unravel hydrodynamics of cerebrospinal fluid (CSF) flow inside ventricles of a human brain, subarachnoid space, as well as spinal canal. Alteration in the circulation of CSF, which acts as a cushion or buffer for the brain providing mechanical and immunological protection inside the skull, can lead to a range of intellectual, visual, physical, neurological, and endocrinologic side effects. There is a huge demand to understand the natural CSF flow patterns and this project addresses such pulsatile flow considering two-way interaction between solid material (e.g. poro-elastic parenchyma) and CSF. The benefit of such high-fidelity, however, isolated, simulations is that our understanding could be integrated into a holistic multi-compartment model which is capable to produce real-time realization of disease occurrence and progress and can be utilized in hospitals for diagnosis and prognosis of dementia, hydrocephalus, etc.
Supervisors at City: Dr M. Omidyeganeh, Prof A. Pinelli - Co-Supervisor at Aix Marseille Univ: Prof J. Favier
This project aims at understanding the interaction of motile beating cilia with surrounding fluid flow by conducting high-fidelity numerical simulations, including high order immersed-boundary methods. A familiar example is the presence of cilia, in the human respiratory tract, within a mixture of air, mucus, and periciliary fluid. This scenario is responsible for mucociliary transport, an important process in which ciliary motion ensures the elimination of foreign objects from the lung. Cilia with specific length and elasticity has particular natural frequency. Interaction of its characteristics with those of flow may provide some advantage in controlling the flow. In many natural environments such as cilia on the walls of respiratory canals or cilia on the coral reefs deep in oceans, there is an internal force which interferes and modifies the interaction (motile cilia). This project studies the effect of active forces in the mixing of the momentum and transport of scalar properties.
Supervisors at City: Dr M. Omidyeganeh, Prof A. Pinelli - Co-Supervisor at MIT: Prof H. Nepf
This project aims at understanding the dominant physical mechanisms of the interaction between the surfaces covered by flexible filamentous structures and the surrounding fluid flow by conducting high-fidelity numerical simulations, including high order immersed-boundary methods. Filamentous surfaces are quite ubiquitous in nature and increasingly seen in bio-inspired technologies. The rivers beds, for instance, are usually covered by vegetation which provides a wide range of ecosystem benefits. It helps to increase the mixing and to remove the excess of nutrients which can lead to the formation of hypoxic zones. Some examples can also come from the animal kingdom. Indeed, some species are covered with complex textured surfaces that are thought advantages in terms of speed (e.g., seals fur) or maneuverability to deliver (e.g., birds feathers). The control of these flows by changing the properties of filaments can potentially lead to important technological applications inspired by nature.
Supervisors at City: Prof Christoph Bruecker
The current discussion on Diesel engines and their quality is showing that the full potential for clean combustion and CO2 neutral performance is still not reached with this technology. Biofuels and improved engine flows pave the way to reach the environmental constrictions and call for further intense research into the internal flow and combustion. The lab has a fully transparent version of a VW 1.6ltr engine, where intake flow studies can be done with modern flow imaging Tools such as Particle Image Velocimetry. Thanks to the developments in the lab, there are world unique methods available such as Scanning PIV and micropillar wall shear stress imaging. These methods will provide a thorough and deep understanding of the near-wall flows along the cylinder and the piston. The project includes the preparation of the rig, the flow studies under unsteady intake conditions and the analysis of the data using volumetric processing and post-processing. A possible cooperation with the ETH Zurich may also provide the unique potential to use our data for initial conditions of first DNS measurements in IC engine flows. The research proposal includes publishing papers, visits to international conference and cooperation with international institutes such as at ETH and Darmstadt University, Germany.
Supervisors at City: Prof Christoph Bruecker
Flow diagnostics in the human blood vessels and the human airways are still difficult to achieve in the clinical practice. Therefore, the method of building flow models and refractive indexed match fluids allow looking into the flow with modern flow measurement methods. The lab has a fully transparent version of a human aorta and several heart valves, which can be tested in this rig. Thanks to the developments in the lab, there are world unique methods available such as Scanning PIV and micropillar wall shear stress imaging. These methods will provide a thorough and deep understanding of the flow in such complex vessels. The project includes the preparation of the rig, the flow studies under unsteady intake conditions and the analysis of the data using volumetric processing and post-processing. A possible cooperation with the ETH Zurich may also provide the unique potential to use our data for initial conditions of first DNS measurements. The research proposal includes publishing papers, visits to international conference and cooperation with international institutes such as at ETH and RWTH Aachen, Germany.
Supervisor at City: Prof. A. Pinelli and Dr. M. Omidyeganeh
Flexible elongated fibres embedded in turbulent flows are known to play a role in redistributing the accumulated energy between flow scales eventually modifying the way in which turbulence is produced and sustained. The drag reducing properties of long polymeric chains in wall bounded liquid turbulent flows is a well-known example of the technological benefits that can be achieved using the interplay between turbulence and the elastic properties of flexible filaments. Initially the thesis will use Direct Numerical Simulation to classify the type of possible interactions in simplified scenarios. In a second stage, filaments with specific properties will be tested to verify if an effective skin friction drag reduction can be attained by hairy elements anchored to a wall bounding a turbulent flow.
Supervisor at City: Prof. A. Pinelli, Prof. C. Bruecker and Dr. M. Omidyeganeh
Coupling 3D PIV measurements and Direct Numerical Simulation could bridge the advantages of both the techniques. PIV systems lack spatio-temporal resolution and not always all flow details can be inferred. On the other hand detailed simulation of turbulent flows require initial and boundary conditions along computational planes where no instantaneous detailed information is available. This thesis will start from an algorithmic approach that marries the two techniques that we are developing at City. The PhD candidate will have the opportunity to collaborate with both the numerical and the experimental staff ascribed to the Aerodynamic and flow control research centre.
Rosti, M. E., Brandt, L. & Pinelli, A. (2018). Turbulent channel flow over an anisotropic porous wall - drag increase and reduction. Journal of Fluid Mechanics, 842, pp. 381-394. doi: 10.1017/jfm.2018.152
Rosti, M. E., Omidyeganeh, M. & Pinelli, A. (2018). Numerical Simulation of a Passive Control of the Flow Around an Aerofoil Using a Flexible, Self Adaptive Flaplet. Flow, Turbulence and Combustion, doi: 10.1007/s10494-018-9914-6
Rosti, M. E., Omidyeganeh, M. & Pinelli, A. (2018). Passive control of the flow around unsteady aerofoils using a self-activated deployable flap. Journal of Turbulence, 19(3), pp. 204-228. doi: 10.1080/14685248.2017.1314486
Bottemanne, M. & Atkin, C.J. (2018). Tool for sizing suction pumps for hybrid laminar flow control concepts. International Journal of Mechanical Engineering and Robotics Research, 7(1), pp. 1-8. doi: 10.18178/ijmerr.7.1.1-8
Elshalakani, M. & Bruecker, C. (2018). Spontaneous Synchronization of Beating Cilia: An Experimental Proof Using Vision-Based Control. Fluids, 3(2), 30.. doi: 10.3390/fluids3020030
Gowree, E.R., Jagadeesh, C., Talboys, E., Lageman, C. & Bruecker, C. (2018). Vortices enable the complex aerobatics of peregrine falcons. Communications Biology, 1, 27.. doi: 10.1038/s42003-018-0029-3
Koukouvinis, P., Bruecker, C. & Gavaises, M. (2017). Unveiling the physical mechanism behind pistol shrimp cavitation. Scientific Reports, 7(1), doi: 10.1038/s41598-017-14312-0
Zhang, Y., Sun, Z., van Zuijlen, A. & van Bussel, G. (2017). Numerical simulation of transitional flow on a wind turbine airfoil with RANS-based transition model. Journal of Turbulence, 18(9), pp. 879-898. doi: 10.1080/14685248.2017.1334908
Favier, J., Li, C., Kamps, L., Revell, A., O Connor, J. & Brücker, C. (2017). The PELskin project—part I: fluid–structure interaction for a row of flexible flaps: a reference study in oscillating channel flow. Meccanica, 52(8), pp. 1767-1780. doi: 10.1007/s11012-016-0521-0
Zhang, Z., Wu, Y., Sun, Z., Song, H., Jia, M., Zong, H. & Li, Y. (2017). Experimental research on multichannel discharge circuit and multi-electrode plasma synthetic jet actuator. Journal of Physics D: Applied Physics, 50(16), 165205.. doi: 10.1088/1361-6463/aa6372
Ostmann, S., Chaves, H. & Bruecker, C. (2017). Path instabilities of light particles rising in a liquid with background rotation. Journal of Fluids and Structures, 70, pp. 403-416. doi: 10.1016/j.jfluidstructs.2017.02.007
Kamps, L., Geyer, T. F., Sarradj, E. & Brücker, C. (2017). Vortex shedding noise of a cylinder with hairy flaps. Journal of Sound and Vibration, 388, pp. 69-84. doi: 10.1016/j.jsv.2016.10.039
Pacholak, S. & Brücker, C. (2017). Size does matter: The use of fish motion for improving human swimming simulations. Applied Mathematical Modelling, 46, doi: 10.1016/j.apm.2017.01.080
Wu, F., Qian, J., Wu, W., Ye, Y., Sun, Z., Xu, B., Yang, X., Xu, Y., Zhang, J. & Chen, R. (2017). Boron-doped microporous nano carbon as cathode material for high-performance Li-S batteries. Nano Research, 10(2), pp. 426-436. doi: 10.1007/s12274-016-1303-7
Zhang, Z., Wu, Y., Jia, M., Song, H., Sun, Z., Zong, H. & Li, Y. (2017). The multichannel discharge plasma synthetic jet actuator. Sensors and Actuators A: Physical, 253, pp. 112-117. doi: 10.1016/j.sna.2016.11.011
Bruecker, C. & Mikulich, V. (2017). Sensing of minute airflow motions near walls using pappus-type nature-inspired sensors. PLoS One, 12(6), e0179253. doi: 10.1371/journal.pone.0179253
Gowree, E.R. & Atkin, C.J. (2017). Measurement and modelling of the turbulent boundary layer near the attachment line of a swept wing. Aeronautical Journal, 121(1240), pp. 746-769. doi: 10.1017/aer.2017.30
Kerr, O. & Gumm, Z. (2017). Thermal instability in a time-dependent base state due to sudden heating. Journal of Fluid Mechanics, 825, pp. 1002-1034. doi: 10.1017/jfm.2017.408
Panagopoulos, I., Atkin, C.J. & Sikora, I. (2017). Developing a performance indicators lean-sigma framework for measuring aviation system’s safety performance. Transportation Research Procedia, 22, pp. 35-44. doi: 10.1016/j.trpro.2017.03.005
Sun, Z. & Bruecker, C. (2017). Investigation of the Vortex Ring Transition using Scanning Tomo-PIV. Experiments in Fluids, 58, 36.. doi: 10.1007/s00348-017-2322-1
Xu, H., Mughal, S. M., Gowree, E.R., Atkin, C.J. & Sherwin, S. J. (2017). Destabilisation and modification of Tollmien-Schlichting disturbances by a three-dimensional surface indentation. Journal of Fluid Mechanics, 819, pp. 592-620. doi: 10.1017/jfm.2017.193
Panagopoulos, I., Atkin, C.J. & Sikora, I. (2016). Lean Six-Sigma in Aviation Safety: An implementation guide for measuring aviation system’s safety performance. Journal of Safety Studies, 2(2), doi: 10.5296/jss.v2i2.10438
Fumarola, I., Gaster, M. & Atkin, C.J. (2016). Experimental investigation of the vorticity amplification on a swept wing with a blunt leading edge. Paper presented at the 52nd 3AF International Conference on Applied Aerodynamics, 27-29 Mar 2017, Lyon, France.
Gowree, E.R. & Atkin, C.J. (2016). On the excitation of Tollmien-Schlichting waves due to surface vibration. Paper presented at the 52nd 3AF International Conference on Applied Aerodynamics, 27-29 Mar 2017, Lyon, France.
Witzke, V., Silvers, L. J. & Favier, B. (2016). Evolution of forced shear flows in polytropic atmospheres: A comparison of forcing methods and energetics. Monthly Notices of the Royal Astronomical Society, 463(1), pp. 282-295. doi: 10.1093/mnras/stw1925
Axtmann, G., Hegner, F., Brücker, C. & Rist, U. (2016). Investigation and prediction of the bending of single and tandem pillars in a laminar cross flow. Journal of Fluids and Structures, 66, pp. 110-126. doi: 10.1016/j.jfluidstructs.2016.07.017
Revell, A., O Connor, J., Sarkar, A., Li, C., Favier, J., Kamps, L. & Brücker, C. (2016). The PELskin project: part II—investigating the physical coupling between flexible filaments in an oscillating flow. Meccanica, doi: 10.1007/s11012-016-0525-9
Rosti, M. E., Kamps, L., Bruecker, C., Omidyeganeh, M. & Pinelli, A. (2016). The PELskin project-part V: towards the control of the flow around aerofoils at high angle of attack using a self-activated deployable flap. Meccanica, doi: 10.1007/s11012-016-0524-x
Pinelli, A., Omidyeganeh, M., Brücker, C., Revell, A., Sarkar, A. & Alinovi, E. (2016). The PELskin project: part IV—control of bluff body wakes using hairy filaments. Meccanica, doi: 10.1007/s11012-016-0513-0
Bruecker, C. (2016). Measurement of near-wall 3D flow velocity from wave-guiding micro-pillars. Optics Express, 24(19), pp. 21407-21414. doi: 10.1364/OE.24.021407
Buhl, S., Gleiss, F., Köhler, M., Hartmann, F., Messig, D., Bruecker, C. & Hasse, C. (2016). A combined numerical and experimental study of the 3D tumble structure and piston boundary layer development during the intake stroke of a gasoline engine. Flow, Turbulence and Combustion,
Corlho, L., Placidi, M., Atkin, C.J. & Sun, Z. (2016). Experimental Investigation of a Handley Page Triple Slotted Aerofoil. Paper presented at the 2016 Applied Aerodynamics Conference: Evolution & Innovation Continues - The Next 150 Years of Concepts, Design and Operations, 19-21 July 2016, Bristol, UK.
Sun, Z. & Bruecker, C. (2016). PIV Study of Flow Separations at a Forward-Facing Step using Long-Range Microscope. Paper presented at the 2016 Applied Aerodynamics Conference: Evolution & Innovation Continues - The Next 150 Years of Concepts, Design and Operations, 19-21 Jul 2016, Bristol, UK.
Sun, Z., Bruecker, C. & Pointz, B. (2016). Transition of A Vortex Ring Visualized by 3D Scanning TomoPIV. Paper presented at the 18th International Symposium on Applications of Laser Techniques to Fluid Mechanics, 4-7 Jul 2016, Lisbon, Portugal.
Crowley, B.J. & Atkin, C.J. (2016). Investigation of the discrete effects of suction in large scale arrays for Laminar flow control. In: 34th AIAA Applied Aerodynamics Conference. . Reston, VA, United States: American Institute of Aeronautics and Astronautics. ISBN 9781624104374
Placidi, M., van Bokhorst, E. & Atkin, C.J. (2016). On the effect of discrete roughness on the growth of crossflow instability in very low turbulence environment. In: 8th AIAA Flow Control Conference. . Reston, VA, United States: American Institute of Aeronautics and Astronautics. ISBN 9781624104329
van Bokhorst, E., Placidi, M. & Atkin, C.J. (2016). The influence of the spatial frequency content of discrete roughness distributions on the development of the crossflow instability. In: 8th AIAA Flow Control Conference. . Reston, VA, United States: American Institute of Aeronautics and Astronautics. ISBN 9781624104329
Ponitz, B., Sastuba, M. & Bruecker, C. (2016). 4D visualization study of a vortex ring life cycle using modal analyses. Journal of Visualization, 19(2), pp. 237-259. doi: 10.1007/s12650-015-0314-x
Pollard, C., Booth, S., Begley, A., Kerr, D., Mackintosh, B., Janice, J., Campbell, C., Whelan, J., Milligan, R., Bergström, J., Fisher, B. & Caraher, M. (2016). Working in Partnership with the Charitable Food Sector to Better Meet the Food Needs of People in Perth. Parity, 29(2), pp. 39-40.
Bruecker, C., Kirmse, C. & Triep, M. (2016). Feedback of the Glottal Jet Flow with Supraglottal Wall Oscillations. Acta Acustica united with Acustica, 102(2), pp. 240-243. doi: 10.3813/AAA.918940
Rosti, M. E., Omidyeganeh, M. & Pinelli, A. (2016). Direct numerical simulation of the flow around an aerofoil in ramp-up motion. Physics of Fluids, 28(2), 025106. doi: 10.1063/1.4941529
Alderman, J., Rolston, S., Gaster, M. & Atkin, C.J. (2016). A method of reducing the drag of transport wings. Paper presented at the 34th AIAA Applied Aerodynamics Conference, 13-17 June 2016, Washington D. C., USA.
Axtmann, G., Rist, U., Hegner, F. & Bruecker, C. (2016). Numerical investigation of the bending of slenderwall-mounted cylinders in low reynolds number flow. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 132, pp. 191-201. doi: 10.1007/978-3-319-27279-5_17
Placidi, M. & Ganapathisubramani, B. (2016). On the effects of surface morphology on the structure of wall-turbulence. Springer Proceedings in Physics, 165, pp. 149-154. doi: 10.1007/978-3-319-29130-7_27
Atkin, C.J. & Gowree, E.R. (2016). Staggered Three-dimensional Cavities as a Possible Method for Skin Friction Drag Reduction. In: Proceedings of the 30th International Council of the Aeronautical Sciences. . Bonn, Austria: The International Council of the Aeronautical Sciences. ISBN 978-3-932182-85-3
Brücker, C., Schlegel, D. & Triep, M. (2016). Feather Vibration as a Stimulus for Sensing Incipient Separation in Falcon Diving Flight. Natural Resources, 07(07), pp. 411-422. doi: 10.4236/nr.2016.77036
Favier, J., Revell, A. & Pinelli, A. (2016). Fluid Structure Interaction of Multiple Flapping Filaments Using Lattice Boltzmann and Immersed Boundary Methods. Advances in fluid structure interaction, 133, pp. 167-178. doi: 10.1007/978-3-319-27386-0_10
Rosti, Marco (2016). Direct numerical simulation of an aerofoil at high angle of attack and its control. (Submitted Doctoral thesis, City, University of London)
Jagadeesh, C., Gowree, E.R. & Atkin, C.J. (2015). Development of a quantitative Schlieren imaging technicque for acoustic waves. Paper presented at the 51st 3AF International Conference on Applied Aerodynamics, 4-6 Apr 2016, Strasbourg, France.
Takeishi, K., Kawahara, G., Wakabayashi, H., Uhlmann, M. & Pinelli, A. (2015). Localized turbulence structures in transitional rectangular-duct flow. Journal of Fluid Mechanics, 782, pp. 368-379. doi: 10.1017/jfm.2015.546
Koehler, M., Hess, D. & Bruecker, C. (2015). Flying PIV measurements in a 4-valve IC engine water analogue to characterize the near-wall flow evolution. Measurement Science and Technology, 26(12), 125302.. doi: 10.1088/0957-0233/26/12/125302
Rockenbach, A., Mikulich, V., Bruecker, C. & Schnakenberg, U. (2015). Fluid transport via pneumatically actuated waves on a ciliated wall. Journal of Micromechanics and Microengineering, 25(12), 125009.. doi: 10.1088/0960-1317/25/12/125009
Placidi, M. & Ganapathisubramani, B. (2015). Effects of frontal and plan solidities on aerodynamic parameters and the roughness sublayer in turbulent boundary layers. Journal of Fluid Mechanics, 782, pp. 541-566. doi: 10.1017/jfm.2015.552
Pattni, K., Broom, M., Rychtar, J. & Silvers, L. J. (2015). Evolutionary graph theory revisited: when is an evolutionary process equivalent to the Moran process?. Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 471, e2182. doi: 10.1098/rspa.2015.0334
Gowree, E.R., Atkin, C.J. & Gruppetta, S. (2015). A simple digital-optical system to improve accuracy of hot-wire measurements. MEASUREMENT SCIENCE and TECHNOLOGY, 26(9),
Valero-Lara, P., Igual, F. D., Prieto-Matias, M., Pinelli, A. & Favier, J. (2015). Accelerating fluid-solid simulations (Lattice-Boltzmann & Immersed-Boundary) on heterogeneous architectures. International Journal of Computational Science and Engineering (IJCSE), 10, pp. 249-261. doi: 10.1016/j.jocs.2015.07.002
Sun, Z. (2015). Micro Vortex Generators for Boundary Layer Control: Principles and Applications. International Journal of Flow Control, 7(1-2), doi: 10.1260/1756-8250.7.1-2.67
Brücker, C. (2015). Evidence of rare backflow and skin-friction critical points in near-wall turbulence using micropillar imaging. Physics of Fluids, 27(031705), doi: 10.1063/1.4916768
Gowree, E.R. & Atkin, C.J. (2015). On the turbulent mean-flow at the leading edge of a swept wing. Paper presented at the 50th 3AF International Conference on Applied Aerodynamics, 30 Mar - 01 Apr 2015, Toulouse, France.
Mikulich, V., Nassauer, B., Kuna, M. & Brücker, C. (2015). Experimental and numerical study of interaction between particle loaded fluid and a rough wall with micropillars. Tribology International, 83(March), pp. 42-50. doi: 10.1016/j.triboint.2014.10.009
Favier, J., Revell, A. & Pinelli, A. (2015). Numerical study of flapping filaments in a uniform fluid flow. Journal of Fluids and Structures, 53, pp. 26-35. doi: 10.1016/j.jfluidstructs.2014.11.010
Schmitz, A., Ponitz, B., Brücker, C., Schmitz, H., Herweg, J. & Bleckmann, H. (2015). Morphological properties of the last primaries, the tail feathers, and the alulae of Accipiter nisus, Columba livia, Falco peregrinus, and Falco tinnunculus. Journal of Morphology, 276(1), pp. 33-46. doi: 10.1002/jmor.20317
Kogan, I., Pacholak, S., Licht, M., Schneider, J., Brücker, C. & Brandt, S. (2015). The invisible fish: hydrodynamic constraints for predator-prey interaction in fossil fish Saurichthys compared to recent actinopterygians. Biology Open, 4(12), pp. 1715-1726. doi: 10.1242/bio.014720
Pelletier, J. D., Sherman, D. J., Ellis, J. T., Farrell, E. J., Jackson, N. L., Li, B. Y., Nordstrom, K. F., Maia, L. P. & Omidyeganeh, M. (2015). Dynamics of sediment storage and release on aeolian dune slip faces: A field study in Jericoacoara, Brazil. Journal of Geophysical Research: Earth Surface, 120(9), pp. 1911-1934. doi: 10.1002/2015JF003636
Witzke, V., Silvers, L. J. & Favier, B. (2015). Shear instabilities in a fully compressible polytropic atmosphere. Astronomy and Astrophysics, 577, A76. doi: 10.1051/0004-6361/201425285
Toja-Silva, F., Favier, J. & Pinelli, A. (2014). Radial basis function (RBF)-based interpolation and spreading for the immersed boundary method. Computers & Fluids, 105, pp. 66-75. doi: 10.1016/j.compfluid.2014.09.026
Ponitz, B., Triep, M. & Brücker, C. (2014). Aerodynamics of the Cupped Wings during Peregrine Falcon’s Diving Flight. Open Journal of Fluid Dynamics, 4(4), doi: 10.4236/ojfd.2014.44027
Bauer, K. & Bruecker, C. (2014). Behavior of oscillatory tube flow at liquid-gas interfaces. Physics of Fluids, 26(7), 072106.. doi: 10.1063/1.4890717
Mikulich, V. & Brücker, C. (2014). Cavitation by spall fracture of solid walls in liquids. Experiments in Fluids, 55, 1785.. doi: 10.1007/s00348-014-1785-6
Pacholak, S., Hochstein, S., Rudert, A. & Brücker, C. (2014). Unsteady flow phenomena in human undulatory swimming: a numerical approach. Sports Biomechanics, 13(2), doi: 10.1080/14763141.2014.893609
Theodorakakos, A., Strotos, G., Mitroglou, N., Atkin, C. & Gavaises, M. (2014). Friction-induced heating in nozzle hole micro-channels under extreme fuel pressurisation. Fuel, 123, pp. 143-150. doi: 10.1016/j.fuel.2014.01.050
Brücker, C. & Weidner, C. (2014). Influence of self-adaptive hairy flaps on the stall delay of an airfoil in ramp-up motion. Journal of Fluids and Structures, 47, pp. 31-40. doi: 10.1016/j.jfluidstructs.2014.02.014
Wang, X., Yan, Y., Sun, Z. & Liu, C. (2014). The Vortical Structures in the Rear Separation and Wake Produced by a Supersonic Micro-Ramp. Flow, Turbulence and Combustion, 93(1), pp. 25-36. doi: 10.1007/s10494-014-9531-y
Valero-Lara, P., Pinelli, A. & Prieto-Matias, M. (2014). Fast finite difference Poisson solvers on heterogeneous architectures. Computer Physics Communications Package, 185(4), doi: 10.1016/j.cpc.2013.12.026
Wang, X., Yan, Y., Sun, Z. & Liu, C. (2014). LES investigation into the generation of momentum deficits in the supersonic wake of a micro-ramp. Journal of Mechanical Science and Technology, 28(4), pp. 1327-1337. doi: 10.1007/s12206-013-1164-x
Favier, J., Revell, A. & Pinelli, A. (2014). A Lattice Boltzmann-Immersed Boundary method to simulate the fluid interaction with moving and slender flexible objects. Journal of Computational Physics, 261, pp. 145-161. doi: 10.1016/j.jcp.2013.12.052
Gowree, E.R. (2014). Influence of Attachment Line Flow on Form Drag. (Unpublished Doctoral thesis, City University London)
Ponitz, B., Schmitz, A., Fischer, D., Bleckmann, H. & Brücker, C. (2014). Diving-flight aerodynamics of a peregrine falcon (Falco peregrinus). PLoS ONE, 9(2), pp. 1-13. doi: 10.1371/journal.pone.0086506
Papadopoulos, Konstantinos, Gavaises, M. & Atkin, C. (2014). A simplified mathematical model for thrombin generation. Medical Engineering and Physics, 36(2), pp. 196-204. doi: 10.1016/j.medengphy.2013.10.012
Ryan, C., Ross, S., Davey, P., Duncan, E. M., Francis, J., Fielding, S., Johnston, M., Kerr, J., Lee, A. J., MacLeod, M. J., Maxwell, S., McKay, G. A., McLay, J. S., Webb, D. J. & Bond, C. (2014). Prevalence and Causes of Prescribing Errors: The PRescribing Outcomes for Trainee Doctors Engaged in Clinical Training (PROTECT) Study. PLoS ONE, 9(1), e79802. doi: 10.1371/journal.pone.0079802
Atkin, C.J. (2014). Convergence of calculated transition loci during computational analysis of transonic aerofoils and infinite swept wings. Paper presented at the 29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014, 7-12 Sep 2014, St Petersburg, Russia.
Gowree, E.R. & Atkin, C.J. (2014). Incompressible turbulent flow at the leading edge of swept wings. Paper presented at the 29th Congress of the International Council of the Aeronautical Sciences, 7-12 Sep 2014, St Petersburg, Russia.
Rockenbach, A., Brücker, C. & Schnakenberg, U. (2014). Pneumatically actuated biomimetic particle transporter. 2014 IEEE 27th International Conference on Micro Electro Mechanical Systems (MEMS), pp. 927-930. doi: 10.1109/MEMSYS.2014.6765794
Gillanders, D.T., Bolderston, H., Bond, F.W., Dempster, M., Flaxman, P., Campbell, L., Kerr, S., Tansey, L., Noel, P., Ferenbach, C., Masley, S., Roach, L., Lloyd, J., May, L., Clarke, S. & Remington, B. (2014). The Development and Initial Validation of the Cognitive Fusion Questionnaire. Behavior Therapy, 45(1), doi: 10.1016/j.beth.2013.09.001
Silvers, L. J. (2014). The Need for Greater Support in Academic Writing for PhD Students in Mathematics and Related Subjects. Learning at City Journal, 4(1), pp. 7-13.
Silvers, L. J., Favier, B. & Proctor, M. R. E. (2014). Inverse cascade and symmetry breaking in rapidly-rotating Boussinesq convection. Physics of Fluids, 26, 096605. doi: 10.1063/1.489513
Sun, Z., Longmire, E. K. & Krizan, D. (2014). Interactions of copepods with fractal-grid generated turbulence based on Tomo-PIV and 3D-PTV. Paper presented at the 67th Annual Meeting of the APS Division of Fluid Dynamics, 23-11-2014 - 25-11-2014, San Francisco, USA.
Sun, Z., Scarano, F., van Oudheusden, B. W., Schrijer, F. F. J., Yan, Y. & Liu, C. (2014). Numerical and experimental investigations of the supersonic microramp wake. AIAA Journal, 52(7), pp. 1518-1527. doi: 10.2514/1.J052649
Sun, Z., Schrijer, F. F. J., Scarano, F. & van Oudheusden, B. W. (2014). Decay of the supersonic turbulent wakes from micro-ramps. Physics of Fluids, 26(2), 025115. doi: 10.1063/1.4866012
Valero-Lara, P., Pinelli, A. & Prieto-Matias, M. (2014). Accelerating solid-fluid interaction using Lattice-Boltzmann and Immersed Boundary coupled simulations on heterogeneous platforms. Procedia Computer Science, 29, pp. 50-61. doi: 10.1016/j.procs.2014.05.005
Omidyeganeh, M., Piomelli, U., Christensen, K.T. & Best, J.L. (2013). Large eddy simulation of interacting barchan dunes in a steady, unidirectional flow. JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE, 118(4), doi: 10.1002/jgrf.20149
Omidyeganeh, M. & Piomelli, U. (2013). Large-eddy simulation of three-dimensional dunes in a steady, unidirectional flow. Part 2. Flow structures. Journal of Fluid Mechanics, 734, pp. 509-534. doi: 10.1017/jfm.2013.499
Skinner, D. M. & Silvers, L. J. (2013). Double-diffusive magnetic buoyancy instability in a quasi-two-dimensional Cartesian geometry. Monthly Notices of the Royal Astronomical Society, 436(1), pp. 531-539. doi: 10.1093/mnras/stt1590
Triep, M., Hess, D., Chaves, H., Brücker, C., Balmert, A., Westhoff, G. & Bleckmann, H. (2013). 3D flow in the venom channel of a spitting cobra: do the ridges in the fangs act as fluid guide vanes?. PLoS ONE, 8(5), pp. 1-11. doi: 10.1371/journal.pone.0061548
Skupsch, C. & Brücker, C. (2013). Multiple-plane particle image velocimetry using a light-field camera. Optics Express, 21(2), pp. 1726-1740. doi: 10.1364/OE.21.001726
Mikulich, V. & Brücker, C. (2013). Flow and motion behavior of particle suspensions in shear flow over a rough surface. WIT Transactions on Engineering Sciences, 79, pp. 263-272. doi: 10.2495/MPF130221
Kerr, John (2013). The securitization and policing of art theft in London. (Unpublished Doctoral thesis, City University London)
Omidyeganeh, M. & Piomelli, U. (2013). Large-eddy simulation of three-dimensional dunes in a steady, unidirectional flow. Part 1. Turbulence statistics. Journal of Fluid Mechanics, 721, pp. 454-483. doi: 10.1017/jfm.2013.36
Keißner, A. & Brücker, C. (2012). Directional fluid transport along artificial ciliary surfaces with base-layer actuation of counter-rotating orbital beating patterns. Soft Matter, 8(19), pp. 5342-5349. doi: 10.1039/c2sm25287b
Torrisi, F., Hasan, T., Wu, W., Sun, Z., Lombardo, A., Kulmala, T. S., Hsieh, G-W., Jung, S., Bonaccorso, F., Paul, P. J., Chu, D. & Ferrari, A. C. (2012). Inkjet-Printed Graphene Electronics. ACS Nano, 6(4), pp. 2992-3006. doi: 10.1021/nn2044609
Skupsch, C., Klotz, T., Chaves, H. & Brücker, C. (2012). Channelling optics for high quality imaging of sensory hair. Review of Scientific Instruments, 83(045001), doi: 10.1063/1.3697997
Atkin, C.J. & Gowree, E.R. (2012). Recent Developlments to the viscous Garabedian and Korn method. Paper presented at the 28th Congress of the International Council of the Aeronautical Sciences, 23-28 Sep 2012, Brisbane, Australia.
Barker, A. J., Silvers, L. J., Proctor, M. R. E. & Weiss, N. O. (2012). Magnetic buoyancy instabilities in the presence of magnetic flux pumping at the base of the solar convection zone. Monthly Notices of the Royal Astronomical Society, 424(1), pp. 115-127. doi: 10.1111/j.1365-2966.2012.21174
Favier, B., Louve, L., Edmunds, L. J., Silvers, L. J. & Proctor, M. R. E. (2012). How can large-scale twisted magnetic structures naturally emerge from buoyancy instabilities?. Monthly Notices of the Royal Astronomical Society, 426(4), pp. 3349-3359. doi: 10.1111/j.1365-2966.2012.21920.x
Sun, Z., Schrijer, F. F. J., Scarano, F. & van Oudheusden, B. W. (2012). PIV investigation of the 3D instantaneous flow organization behind a micro-ramp in a supersonic boundary layer. Paper presented at the 28th International Symposium on Shock Waves, 17-07-2011 - 22-07-2011, Manchester, UK.
Sun, Z., Schrijer, F. F. J., Scarano, F. & van Oudheusden, B. W. (2012). The three-dimensional flow organization past a micro-ramp in a supersonic boundary layer. Physics of Fluids, 24(5), 055105. doi: 10.1063/1.4711372
Mattheus, W. & Brücker, C. (2011). Asymmetric glottal jet deflection: differences of two- and three-dimensional models. The Journal of the Acoustical Society of America (JASA), 130(6), EL373 -EL379. doi: 10.1121/1.3655893
Schwarze, R., Mattheus, W., Klostermann, J. & Brücker, C. (2011). Starting jet flows in a three-dimensional channel with larynx-shaped constriction. Computers and Fluids, 48(1), pp. 68-83. doi: 10.1016/j.compfluid.2011.03.016
Favier, J., Pinelli, A. & Piomelli, U. (2011). Control of the separated flow around an airfoil using a wavy leading edge inspired by humpback whale flippers. Comptes Rendus Mecanique, 340(1), pp. 107-114. doi: 10.1016/j.crme.2011.11.004
Omidyeganeh, M. & Piomelli, U. (2011). Large-eddy simulation of two-dimensional dunes in a steady, unidirectional flow. Journal of Turbulence, 12(42), pp. 1-31. doi: 10.1080/14685248.2011.609820
Sekimoto, A., Kawahara, G., Sekiyama, K., Uhlmann, M. & Pinelli, A. (2011). Turbulence-and buoyancy-driven secondary flow in a horizontal square duct heated from below. Physics of fluids, 23, 075103. doi: 10.1063/1.3593462
Kerr, J., Hilari, K. & Litosseliti, L. (2010). Information needs after stroke: What to include and how to structure it on a website. A qualitative study using focus groups and card sorting. Aphasiology, 24(10), pp. 1170-1196. doi: 10.1080/02687030903383738
Pinelli, A., Naqavi, I. Z., Piomelli, U. & Favier, J. (2010). Immersed Boundary Method for Generalised Finite Volume and Finite Difference Navier-Stokes Solvers. Journal of Computational Physics, 229(24), pp. 9073-9091. doi: 10.1016/j.jcp.2010.08.021
Pinelli, A., Uhlmann, M., Sekimoto, A. & Kawahara, G. (2010). Reynolds number dependence of mean flow structure in square duct turbulence. Journal of Fluid Mechanics, 644, pp. 107-122. doi: 10.1017/S0022112009992242
Silvers, L. J., Vasil, G., Brummell, N. H. & Proctor, M. (2010). The Evolution of a Double Diffusive Magnetic Buoyancy Instability. Proceedings of the International Astronomical Union, 6(S271), pp. 218-226. doi: 10.1017/S1743921311017649
Uhlmann, M., Kawahara, G. & Pinelli, A. (2010). Traveling-waves consistent with turbulence-driven secondary flow in a square duct. Physics of Fluids, 22, 084102.. doi: 10.1063/1.3466661
Silvers, L. J., Bushby, P. J. & Proctor, M. R. E. (2009). Interactions between magnetohydrodynamic shear instabilities and convective flows in the solar interior. Monthly Notices Of The Royal Astronomical Society, 400(1), pp. 337-345. doi: 10.1111/j.1365-2966.2009.15455.x
Silvers, L. J., Vasil, G. M., Brummell, N. H. & Proctor, M. R. E. (2009). Double-diffusive instabilities of a shear-generated magnetic layer. The Astrophysical Journal Letters, 702(1), doi: 10.1088/0004-637X/702/1/L14
Triep, M., Brücker, C., Kerkhoffs, W., Schumacher, O. & Marseille, O. (2008). Investigation of the washout effect in a magnetically driven axial blood pump. Artificial Organs, 32(10), pp. 778-784. doi: 10.1111/j.1525-1594.2008.00630.x
Chagnaud, B. P., Brücker, C., Hofmann, M. H. & Bleckmann, H. (2008). Measuring flow velocity and flow direction by spatial and temporal analysis of flow fluctuations. Journal of Neuroscience, 28(17), pp. 4479-4487. doi: 10.1523/JNEUROSCI.4959-07.2008
Benson, V.S., Patnick, J., Davies, A.K., Nadel, M.R., Smith, R. A. & Atkin, W. S. (2008). Colorectal cancer screening: A comparison of 35 initiatives in 17 countries. International Journal of Cancer, 122(6), pp. 1357-1367. doi: 10.1002/ijc.23273
Silvers, L. J. (2008). Long-term Nonlinear Behaviour of the Magnetorotational Instability in a Localised Model of an Accretion Disc. Monthly Notices of the Royal Astronomical Society, 385(2), pp. 1036-1044. doi: 10.1111/j.1365-2966.2008.12906.x
Atkin, C.J. (2001). New aerodynamic approaches to suction system design. Notes on Numerical Fluid Mechanics, 76(3), pp. 55-63. doi: 10.1007/978-3-540-45359-8_7
Atkin, C.J. & Schrauf, G. (2000). Progress in linear stability methods for design applications. Paper presented at the European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2000), 11-14 Sep 2000, Barcelona, Spain.
Atkin, C.J. Performance trade-off studies for a retrofit Hybrid Laminar Flow Control system. Paper presented at the 2nd AIAA Flow Control Conference, 26 June - 1 July, Portland, Oregon.
Atkin, C.J. Predicting the mission performance of a retrofit Hybrid Laminar Flow Control system. Paper presented at the Aerospace Aerodynamics Research Conference, 2002.
Silvers, L. J. & Witzke, V. Mean flow evolution of saturated forced shear flows in polytropic atmospheres. EAS Publications Series,
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