In order to develop the performance optimization method of the integrated afterburner under the condition of high temperature and strong swirling inflow,the numerical simulation of the influence of different structural parameters on the combustion flow field characteristics of the integrated afterburner was carried out.The results show that:1)If the length of the diffuser is too short,it is easy to cause flow separation and reduce the total pressure recovery coefficient and combustion efficiency.If it is too long,it will affect the matching of the strong after-swirl flow and strut.2)Increasing the diffuser area ratio can effectively improve the flame stabilization performance,combustion efficiency,and total pressure recovery coefficient of the strut.3)If the strut is too short or too long,both the total pressure recovery coefficient and the flame stabilization performance of the cavity-central cone integrated recirculation zone will be reduced.4)Increasing the width of the strut can effectively improve the combustion efficiency and flame stabilization performance.5)Increasing the expansion angle of the trailing edge of the strut can improve the flame stabilization performance of recirculation zone after the strut.
关键词
高温强余旋进气/一体化加力燃烧室/结构参数/总压恢复系数/回流量/稳火/航空发动机
Key words
high temperature and strong swirling inflow/integrated afterburner/structural parameter/total pressure recovery coefficient/quantity of reflux/flame stabilization/aero-engine
维普
万方数据