This studentship afford the student a chance to go deep in the areas of multiphase flows and heat-transfer enhancement, as well as in technologies relevant to vehicle electrification.
- Qualification Type: PhD
- Hours: Full Time
- Title of project: Two-phase Cooling Systems for Electric Vehicle Battery Packs
- Placed On: 1st February 2022
- Closes: 31st August 2022, or until places have been filled.
Applications are invited for a PhD studentship in the Department of Engineering. The successful candidate will have the opportunity to work on the simulation of multiphase flows relevant to immersion cooling concepts suitable for battery packs of Electric Vehicles.
The current transformation of the transportation sector to a core part of a future, fully sustainable economy will fail unless new innovative and technologically viable solutions to efficiently reduce CO2 emissions are developed.
Substitution of conventional Internal Combustion Engines (ICE) with Electric Vehicles (EVs) powered by Li-ion batteries is a key priority for the UK to decarbonize the transportation sector.
However, the long-term operation of such powertrains is currently severely limited or even prohibited by the inability of Battery Thermal Management Systems (BTMS) to cope with the heat rates generated during battery charge/discharge.
Current shortcomings can be addressed by drastic improvements of the thermal management of Li-Ion batteries allowing higher discharge rates and leading to increased cell lifetime.
Development of immersed cooling BTMSs utilising phase-change due to boiling in dielectric fluids can overcome this barrier, as boiling heat transfer can offer a tenfold increase in the values of the obtained heat transfer coefficients compared to single phase forced convection, while at the same time allowing for enhanced temperature uniformity at the heated surface.
The successful implementation of an immersion, two-phase cooling system relies on the understanding of heat transfer mechanisms relevant to pool and flow boiling, as well as relevant bubble-interaction phenomena.
A robust approach for the numerical modelling of such systems necessitates the selection of suitable methodologies for the treatment of discrete liquid/vapour phases and the incorporation of models describing bubble interaction and phase-change rate.
The proposed research will afford the student a chance to go deep in the areas of multiphase flows and heat-transfer enhancement, as well as in technologies relevant to vehicle electrification.
The results of a successful doctoral thesis are expected to be of interest to the booming EV industry. The student will be encouraged to publish results of their research at leading international conferences and in top-tier journals focusing on fluid mechanics, heat transfer as well as applied research.
They will be encouraged to communicate directly with the current network of industrial partners and aim to further enhance knowledge transfer between academia and industry.
Eligibility and requirements
The candidate should have an upper second-class BSc/BEng/MEng (or equivalent, or higher) degree in mechanical engineering or physics. They should demonstrate aptitude for original research.
The candidate should possess a good understanding of fluid mechanics, heat transfer and numerical modelling. A candidate who demonstrates exceptional aptitude in one or more of these areas (as evidenced, for instance, through strong academic credentials or research papers in reputable, peer-reviewed journals/conferences) may be accorded preference.
Further desired skills constitute familiarity with open-source and/or commercial Computational Fluid Mechanics software, objected-oriented programming languages and high-performance computing environments.
A doctoral candidate is expected to meet the following pre-requisites for their PhD:
- Demonstrate a sound knowledge of their research area
- Achieve and demonstrate significant depth in at least a few chosen sub-areas relevant to their primary research area
- Demonstrate the ability to conduct independent research, including a critical assessment of their own and others’ research
Having published high-quality papers in reputable peer-reviewed conferences and journals will be an advantage for the candidate.
The studentship is for 3 years and will provide full coverage of tuition fees (Home and Overseas) and an annual tax-free stipend of £12,000.
Each student would also have the opportunity to earn around £2,200 per annum on an average (max. is around £4,300 per annum) through a teaching assistantship. We shall prioritise these scholarship holders while allocating the teaching assistantships.
How to apply
If you are interested in applying, you are encouraged to email initial informal enquiries to Ioannis Karathanassis.
Visit our Mechanical Engineering and Aeronautics research degrees web page for further information on making a formal application.
When submitting your application, enter the title “Two-phase Cooling Systems for Electric Vehicle Battery Packs” and you will automatically be considered for this studentship.
You do not need to submit a proposal as part of your application as the project has already been outlined.
The online application can be found in the ‘How to apply section’ in the web link above and should include the following supporting documents:
- Copies of Degree Certificates and Transcripts in official English translation - original will be requested before an offer is made.
- Official work e-mail addresses (not private ones) for two referees (one of which must be an academic).
- Proof of English Language proficiency (minimum average score of 6.5 IELTS, with a minimum of 6.0 in each of the four components) if English is not your first language.
The outcome of the selection process should be announced by the end of September. The successful candidate will formally start their doctorate in October 2022.
For queries regarding the application process, please email the School.
Equality, diversity and inclusion
City, University of London is committed to promoting equality, diversity and inclusion in all its activities, processes, and culture, for our whole community, including staff, students and visitors.
We welcome applications regardless of gender, sexual orientation, disability, marital status, race, nationality, ethnic origin, religion or social class. For more information on our approaches to encouraging an inclusive environment, please see our Equality, Diversity and Inclusion pages.