The Effect of Airfoil Perforation on Its Surface Cavitation Characteristics

ZHU Xiao-dong,LIU Xiao-bing,TIAN Chang-an

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China Rural Water and Hydropower ›› 2020 ›› (2) : 83-87.

The Effect of Airfoil Perforation on Its Surface Cavitation Characteristics

  • ZHU Xiao-dong,LIU Xiao-bing,TIAN Chang-an
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Abstract

In order to study the effect of micropores on the cavitation performance of NACA5412 airfoil, the Euler multiphase flow model and the turbulence model are used to calculate the flow field around 13 different NACA5412 airfoil structures, and analyze the pressure distribution around different airfoil structures. The results show that range of the lower pressure zone above the non-porous airfoil is larger than that of the below. Moreover, both of upwards and downwards pressures of different airfoil structures-firstly decreases and then increases. The micropores change the flow field of the non-porous airfoil around the flow, pull down The range of the low pressure zone, and suppress the initial cavitation occurs. The area ratio studied in this paper ranges from 0.001 7% to 0.162 9%, The 1.5mm quincunx hole (0.091 7%) has a minimum range of low pressure regions around the airfoil. The research results can provide some basic theoretical basis for further research to solve the cavitation problem of hydraulic machinery.

Key words

airfoil / area ratio / micropore / quincunx hole / low pressure zone

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ZHU Xiao-dong,LIU Xiao-bing,TIAN Chang-an. The Effect of Airfoil Perforation on Its Surface Cavitation Characteristics. China Rural Water and Hydropower. 2020, 0(2): 83-87

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