Transient spray combustion characteristics in a gas-liquid pintle rocket engine under acoustic excitation.

ABSTRACT: In order to investigate the acoustic oscillation characteristics of gas-liquid pintle rocket engines and elucidate the path by which spray combustion process provides energy to the combustor pressure oscillation, a LOX/GCH₄ pintle engine with rectangular combustor was designed. By adding transverse velocity disturbance for the first time, the acoustic response of spray combustion process was simulated, and the effect of excitation amplitude on acoustic response was researched. Numerical results show that the adopted transverse velocity disturbance can excite the first-order transverse acoustic oscillation with same excitation frequency in the engine combustor. The acoustic response maintenance mechanism under extrinsic excitation is summarized for pintle engines. Besides, the te

SUBMITTER: Jin X 

PROVIDER: S-EPMC11637071 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature