插板式静态进气畸变数值模拟与试验验证  

The Numerical Simulation and Experimental Verification of the Steady Insert Board Inlet Distortion

作　　者：甘甜[1] 王如根[1] 李少伟[1] 胡加国[1] 

机构地区：[1]空军工程大学航空航天工程学院,陕西西安710038

出　　处：《空军工程大学学报（自然科学版）》2013年第5期9-12,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61172169);中国博士后基金资助项目(2012M521897)

摘　　要：采用插板的方法模拟进气道畸变对某型发动机进行了进气道/发动机匹配工作稳定性的数值模拟,选取了nlcor=70%、75%、82%、89%、96.7%5个工作状态。对进气道出口稳态压力畸变、周向不均匀度的计算与试验结果进行对比分析,得出了与试验结果一致稳态压力畸变。结果表明:发动机换算转速一定时,周向不均匀度随插板高度变化是非线性的,在插板高度大于30%D时,周向不均匀度开始剧增;插板高度一定时,周向不均匀度随发动机换算转速的变化也是非线性的,在换算转速为82%变化较大。Simulation of inlet distortion is carried out by using a method of the Insert board to test the stability of inlet/engine matching work of a domestic engine,and five operation states,i.e.,nlcor=70%,75%,82%,89%,96.7% are selected.The numerical simulation results and the test results of steady total pressure distortion and Δσ0 of the inlet are contrasted and analyzed.The steady total pressure distortion obtained by calculation is the same as that obtained by test.When nlcor is constant,Δσ0 is non-linear with the change of the height of the insert board.When the height of the board is above 30%,Δσ0 begins to soar.When the height is constant,Δσ0 is non-linear with the change of nlcor.nlcor changes dramatically at value 82%.

关 键 词：进气道 畸变 插板 发动机换算转速 计算流体力学 

分 类 号：V211.48[航空宇航科学与技术—航空宇航推进理论与工程]