Numerical study on flow field characteristics of an integrated afterburner under high temperature and strong swirling inflow conditions
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.
high temperature and strong swirling inflowintegrated afterburnerstructural parametertotal pressure recovery coefficientquantity of refluxflame stabilizationaero-engine
万方数据
维普
