To greatly reduce the corner separation and improve the aerodynamic performance of a high load compressor cascade with vane-type vortex generator,structural optimization was carried out on the vortex generator.The specific way is to simulate the flow field in the generator with different geometric parameters and at different positions based on orthogonal experiment using CFD software,so as to obtain the total pressure loss coefficient and static pressure rise coefficient of the cascade at design angle of attack for different schemes.Range analysis was used to study the effects of generator geometric parameters on the cascade loss and diffusion capacity,and to analyze the influence level of different parameters on the cascade performance,and finally to find out an optimum design scheme.Results show that via the optimized vanetype vortex generator,the cascade loss can be reduced and the diffusion capacity can be improved within a wide range of attack angles.%为了最大程度地减弱叶栅角区分离,改善叶栅气动性能,对某高负荷扩压叶栅的叶片式涡流发生器进行了结构优化.基于正交试验设计方法,利用计算流体力学软件分别对不同位置和不同几何参数的涡流发生器进行全三维流场数值模拟,获得各组方案在设计攻角下叶栅的总压损失系数和静压升系数.并采用极差分析法研究了叶片式涡流发生器各几何参数对叶栅损失和扩压能力的影响规律以及各个参数不同水平对叶栅性能影响的主次顺序,找出性能较优的设计方案.结果表明:优化后的涡流发生器能在较宽的攻角范围内降低叶栅损失,提高叶栅的扩压能力.
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