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以西北工业大学某亚声速轴流压气机孤立转子为研究对象,提出了较为可靠的数值模拟方法,进而采用NUMECA软件包中DESIGN/3D软件块,在峰值效率工况下对该转子机匣进行了轴对称造型优化,最终得到优化转子.优化转子在叶片前缘将叶顶间隙泄漏涡推离叶片吸力面,虽然该结果导致前30%轴向弦长间隙泄漏涡涡量及流动损失有一定程度增大,但是在后70%轴向弦长,优化转子间隙泄漏涡的涡量与流动损失比原始转子有了很大程度降低,从而使得全局损失降低,峰值点效率提高,出口绝对总压增加.优化转子的峰值点效率提升约为0.36%,大流量点效率增加更多,但是近失速点会更早地形成叶顶低速区从而诱发失速,使得优化转子比原始转子稳定裕度略有降低.
Taking the isolated rotor of a subsonic sonic compressor at Northwestern Polytechnical University as an example, a more reliable numerical simulation method is put forward. Then the DESIGN / 3D software block of NUMECA software package is used to perform the rotor casing under peak efficiency conditions Axisymmetric modeling is optimized to optimize the rotor.Optimization of the rotor pushes the tip vortex leakage vortex off the suction side of the blade at the leading edge of the blade although this results in a certain amount of leakage vortex volume and flow loss in the first 30% of the axial chordal gap However, at the latter 70% axial chord length, the vorticity and flow loss of the optimized rotor clearance leakage vortex are greatly reduced compared with the original rotor, so that the global loss is reduced and the peak point efficiency is increased. The absolute total pressure at the outlet Increase the efficiency of the peak point of the optimized rotor is about 0.36%, the efficiency of the large-flow point increases more, but the near-stall point will form the low-speed region of the tip earlier to induce the stall, so that the optimized rotor is slightly more stable than the original rotor reduce.