对航空发动机燃烧室工作稳定性的思考

Reflection on Work Stability of Aircraft Engine Combustor

航空发动机燃烧室工作稳定性与飞机飞行安全息息相关。因此,在规定的飞行速度之中必须要充分的保证好燃烧室工作的稳定性。影响航空发动机燃烧室不稳定性因素包括火焰稳定基本性能、声耦合效应与反应物供应情况几种。利用CFD技术与反应动力学理论进行定量分析,本文主要从燃烧室火焰稳定性、燃烧室内声耦合效应稳定性、燃烧声稳定性与发动机系统反应物供应限制导致的燃烧室不稳定性分析航空发动机燃烧室的工作稳定性。

Aircraft engine combustor working stability is closely related to the aircraft flight safety. Therefore, at the regulated speed, we must fully ensure the stability of combustion chamber. The influencing factors of aircraft engine combustor instability factors include flame stability basic performance, acoustic coupling effect and reactant supply situation. The quantitative analysis was made by using CFD technology and reaction kinetics theory. The paper analyzes the working stability of aircraft engine combustor from the combustion flame stability, sound indoor acoustic coupling effect stability, combustion stability and the combustion instability caused by engine system reactant supply constraints.