About the Project
In LNG sloshing, gas film pressure increases can lead to vapour condensation and reduced entrained gas pocket volumes. This effect is not currently included in LNG sloshing impact models, and consequently incorporating this phenomenon will improve the prediction of loads on the container wall and inform future LNG tank design.
Droplet impacts with heated surfaces are widely used as a method of reducing the temperature of very hot surfaces. Energy is transferred from the heated surface to individual droplets, leading to droplet evaporating and a net reduction in surface temperature. Evaporation from the droplet into the gas film enhances the pre-existing cushioning process. Once the surface reaches the Leidenfrost temperature the vapour cushion stabilizes and the droplet skates upon this cushion rather than impact the solid.
Using computational and analytical fluid dynamics, and mathematical modelling, this project will extend existing pre-impact gas-cushioning models by incorporating liquid boiling and condensation from the gas film. The models developed in this project will inform the thermofluid dynamics of liquid-solid impacts with phase change and improve understanding of the problems described.
Candidates should have (or expect to achieve) a UK honours degree at 2.1 or above (or equivalent) in Engineering, Applied Mathematics, Physics or a cognate discipline.
Knowledge of: Fluid dynamics, thermodynamics. Experience of computational methods would be beneficial.
• Apply for Degree of Doctor of Philosophy in Engineering
• State name of the lead supervisor as the Name of Proposed Supervisor
• State ‘Self-funded’ as Intended Source of Funding
• State the exact project title on the application form
When applying please ensure all required documents are attached:
• All degree certificates and transcripts (Undergraduate AND Postgraduate MSc-officially translated into English where necessary)
• Detailed CV
Informal inquiries can be made to Dr P Hicks (email@example.com), with a copy of your curriculum vitae and cover letter. All general enquiries should be directed to the Postgraduate Research School (firstname.lastname@example.org)
It is possible to undertake this project entirely by distance learning. Interested parties should discuss this with Dr Hicks.
Hicks, P. D. & Purvis, R. Air cushioning and bubble entrapment in three-dimensional droplet impacts. J. Fluid Mech., 2010, 649, 135-163.
Hicks, P. D.; Ermanyuk, E. V.; Gavrilov, N. V. & Purvis, R. Air trapping at impact of a rigid sphere onto a liquid. J. Fluid Mech., 2012, 695, 310-320.
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