Analysis of coaxial-flame response during transverse combustion instability
Year: 2017
Type: article
Abstract: This paper presents the investigation of flame response during a transverse combustion instability in a small-scale rocket engine via numerical simulation. The computation is performed in the framework of Large-Eddy Simulation with the objective to understand the physical mechanisms driving the contribution of the unsteady combustion to the unstable mode. Two simulations are considered: first, a computation of the full engine, including the injection manyfold, the 42 coaxial injectors, the combustion chamber and the outlet nozzle. Then a single injector is considered for the scrutiny of individual flame response. The analysis of the unstable transverse mode in the full configuration reveals the contribution of individual flames through a budget of acoustic energy. The single-injector configuration exhibits the different roles of the hydrogen and oxygen flows in the flame response.
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W6903644077