跨音速平面叶栅全位势无粘-粘性迭代计算

本文发展了一种全位势与附面层、尾迹流正逆模式积分法迭代计算程序,给出了计算结果与国内外四个不同的叶栅风洞试验结果的对比分析。结果表明,对比是较为满意的,本文在网格生成,无粘跨音流求解和无粘流与附面层、尾迹流迭代等方面所作的发展和改进适用,使整个程序系统具有工程实用价值。 

A METHOD FOR COMPUTATION OF VISCID/INVISCID INTERACTION ON TRANSONIC COMPRESSOR CASCADES

An inviscid/viscous interacton method has been developed to predict the blade-to-blade flow in transonic compressor cascades. The method intends to be used primarily for relatively high camber blades where the suction surface boun-dary layer may be slightly separated near the trailing edge. The inviscid flow was calculated by means of AF2 finite-difference scheme on a newly constructed H-type grid system[3], and the viscous flow by the aid of an integral method for laminar and turbulent boundary layers[6] . An integration calculation was then carried out to determine the blade deviation angle and the total pressure loss coefficient. One of the authors has been involved in the recent transonic experimental work of one set of MCA cascades in Sichuan.The numerical predictions obtained have been compared with test data on four different transonic cascades in reasonably good agreement.