Simulation haute-fidélité de la combustion pour les moteurs-fusées

Abstract : Ignition is a key point in the design of liquid rocket engine (LRE), and it requires to take into account several distinct physical phenomena that constitute numerical challenges. The first point addressed during this thesis is the modeling and simulation using Large Eddy Simulation of a LRE igniter in a configuration close to VINCI rocket engine. The hot gases from the igniter, rich in oxygen, are delivered at supersonic speeds in a chamber filled with hydrogen. Such configuration creates under-expanded jets with multiple shock/shock or shock/flame interactions. A focus is done on the ignition process. The second point addressed is the modeling and simulation of high pressure H2/O2 combustion which occurs. In particular, the effects of non-ideal diffusion are studied through a 1D premixed flames and a 2D splitter plate configuration. An impact of modeling on the species produced and the temperature field is highlighted.
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  • HAL Id : tel-02173327, version 1

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Umut Guven. Simulation haute-fidélité de la combustion pour les moteurs-fusées. Mécanique des fluides [physics.class-ph]. Normandie Université, 2018. Français. ⟨NNT : 2018NORMIR30⟩. ⟨tel-02173327⟩

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