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Etude phénoménologique des processus d‟allumage et de stabilisation dans les chambres de combustion turbulente swirlées.

Abstract : This research is dedicated to the study of turbulent flames ignition and stabilization processes in representatives' aircraft combustion chambers. This PHD thesis, fully experimental, is based on studying and understanding local parameters (velocity and fuel concentration) and historical effects of the flame kernel's environment during its propagation on ignition statistics. To explain this statistics, various scenarios arre proposed and discussed. In this way, we justify the existence of high and low efficiency areas thanks to a time development criterion of the flame kernel. The second part of this thesis is dedicated to flame stabilization improvment by using H2 enrichment. Turbulent kerosene/air flames have been doped in gaseous hydrogen. We demonstrate a reduction of pressure oscillations' amplitude for the same flame structure.
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Submitted on : Monday, February 13, 2012 - 2:02:29 PM
Last modification on : Tuesday, October 19, 2021 - 4:14:03 PM
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  • HAL Id : tel-00669522, version 1

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Jean-Philippe Frenillot. Etude phénoménologique des processus d‟allumage et de stabilisation dans les chambres de combustion turbulente swirlées.. Autre [cond-mat.other]. INSA de Rouen, 2011. Français. ⟨NNT : 2011ISAM0021⟩. ⟨tel-00669522⟩

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