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本文拟定一种离心式压气机定常、亚音速、绝热、无粘准三元流动的计算程序:对给定几何形状的叶轮,用流函数借助映象平面用随半径而变化的分布涡代替叶轮旋转敬应作假定为任意回转面的S_1流面分析,以及推出沿准正交线的速度梯度方程,并用积分形式的连续方程用流线曲率法作平均S_2流面分析,再通过S_1、S_2流面相互迭代而求得准三元解,计算精确、省时。文中还讨论了S_2流面计算中的速度收敛问题,并利用程序的计算结果讨论导风轮叶片造型、叶轮子午内外轮廓型线和多变效率的分布对速度分布的影响问题。
This paper draws up a centrifugal compressor constant, subsonic, adiabatic, non-stick quasi-ternary flow calculation program: For a given geometry of the impeller, the flow function with the image plane with the radius of the distribution of vortex instead of the impeller Rotary King should be assumed to be a S_1 flow surface analysis of arbitrary swivel surface, and the velocity gradient equation along the quasi-orthogonal line is introduced, and the continuous flow equation method is used to make an average S_2 flow surface analysis by using the continuous flow integral curve equation, and then through S_1, S_2 Flow surface iterative and obtained quasi-ternary solution, accurate calculation, saving time. In the paper, the velocity convergence in S_2 flow surface calculation is also discussed. The calculation results of the program are also used to discuss the influence of the shape of the guide vane, the profiles of the inner and outer profiles of the impeller and the variable efficiency on the velocity distribution.