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使用压力修正算法及kε湍流模式求解Reynolds时均的NS方程,数值分析了离心式压气机叶轮内部湍流流动及叶轮出口“射流尾迹”结构的形成过程,计算与实验结果的比较表明,二次流对低能流体的输运是形成射流尾迹结构的主要原因。
Using the pressure correction algorithm and the kε turbulence model to solve the Navier-Stokes equations, the numerical analysis of turbulent flow inside a centrifugal compressor impeller and the formation of “jet wake” structure at the exit of the impeller are carried out. The comparison between the calculated and experimental results shows that the secondary flow The transport of low-energy fluid is the main reason for forming jet wake structure.