Influence of bump parameters on the performance of a transonic compressor cascade under different bump configuration method

doi:10.16411/j.cnki.issn1006-7736.2021.02.010

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Journal of Dalian Maritime University ›› 2021, Vol. 47 ›› Issue (2) : 83-96. DOI: 10.16411/j.cnki.issn1006-7736.2021.02.010

HU Yi ¹, HAN Ji-ang^*1, QIAN Xin-wei ¹, DING Xiao-juan¹, ZHONG Jing-jun²

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Abstract

In order to investigate the effect of bump configuration methods and parameters of the bump on the aerodynamic performance of transonic compressor linear cascade, the HicksHenne function, the CST parametric method, the Parsec tracing method and the polynomial interpolation function were adopted to construct the bump respectively, and numerical simulation of the linear cascade of transonic compressor with different configuration methods and parameters of the bump were carried out. The calculation results show that the blade leading edge shock shape with different configuration methods gradually changes from “λ” shock to “X” shock as the initial installation position of the bump moves backward, but the blade leading edge shock shape will change between the “λ” shock and the “X” shock when the configuration method and the height of the bump are different. When the CST parametric method is employed to construct the bump, the best initial installation position of the bump should be 0.475 times the chord length. While the other three configuration methods are used, the initial installation position of the bump is suggest to be 0.525 times the chord length. When using polynomial interpolation function to construct the bump, the height of the bump should be 0.01 times the chord length, when the other three configuration methods are adopted, the height of the bump should be 0.0125 times the chord length. When using CST parametric method to construct the bump, the length of the bump should be 0.3 times the chord length, when the other three configuration methods are adopted, the length of the bump should be 0.4 times the chord length.

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transonic compressor / planar cascade / configuration method / bump parameters / aerodynamic performance / numerical simulation

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HU Yi,HAN Ji-ang, QIAN Xin-wei,DING Xiao-juan,ZHONG Jing-jun. Influence of bump parameters on the performance of a transonic compressor cascade under different bump configuration method[J]. Journal of Dalian Maritime University. 2021, 47(2): 83-96 https://doi.org/10.16411/j.cnki.issn1006-7736.2021.02.010

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