采用机匣壁动态压力测量技术对某高速亚音轴流压气机转子中转数可压条件下不同工况点叶尖流场进行了测量.在对近失速工况点试验测量结果进行详细分析的基础上,结合全通道非定常的数值模拟对试验观察到的流动现象进行了解释.结果表明:随着工况点向失速边界点推进,叶尖区出现的非定常流动现象(旋转不稳定性)增强,且该非定常流动现象的活动频率随流场的调整在一定带宽范围内变化;通过非定常数值模拟结果与试验测量结果的对比分析表明,叶尖通道中以一定周期活动的TSV的出现是旋转不稳定性流动现象出现的流体动力学机制.
参考文献
[1] | R. Mailach;I. Lehmann;K. Vogeler .Rotating Instabilities in an Axial Compressor Originating From the Fluctuating Blade Tip Vortex[J].Journal of turbomachinery,2001(3):453-460. |
[2] | Joachim Marz;Chunill Hah;Wolfgang Neise .An Experimental and Numerical Investigation into the Mechanisms of Rotating Instability[J].Journal of turbomachinery,2002(3):367-374. |
[3] | Y. Wu;Q. Li;W. Chu;H. Zhang;Z. Su .Numerical investigation of the unsteady behaviour of tip clearance flow and its possible link to stall inception[J].Proceedings of the Institution of Mechanical Engineers, Part A. Journal of power and energy,2010(1):85-96. |
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