Modelling of nucleate boiling

Abstract : For a superheated liquid, when the saturated vapour pressure is greater than the ambient pressure, a violent process known as boiling occurs: vapour bubbles are formed at nucleation sites on the heated surface, grow in size by liquid evaporation and finally, when sufficiently large, detach under the action of gravity. This process is extremely important in many heat transfer technologies, due to its efficiency for transporting energy with limited losses, in the form of enthalpy of evaporation. On a more fundamental point of view, getting rid of gravity would permit observation of larger bubbles without detachment and a better understanding of the complexity of the boiling process. This is one of the objectives of the RUBI experiment planned by the European Space Agency (ESA) on board the International Space Station. The activities of the ULB-TIPs department as a partner in the project are in particular concerned with the modelling of bubble growth, which is hereby proposed as a PhD thesis subject. There is currently a model developed at TIPs, based upon a multi-scale approach and using the commercial software COMSOL-Multiphysics. The candidate is expected to start his work by further extending this model, to compare its predictions with experimental results and, when the need arises, to develop other ones, in particular in collaboration with our ESA-project partners.
Promoteur/Supervisor : Prof. Colinet Pierre
Email :
Site Web/Web site :
Centre de recherche/Research center : TIPs (Transfers, Interfaces and Processes)
Faculté/Faculty : Faculté des Sciences appliquées - école polytechnique/Brussels School of Engineering (Faculty of Applied Sciences)
Ecole doctorale/Graduate Colleges : Sciences de l'ingénieur/Engineering
Ecole doctorale thématique/Graduate School (French Only):

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