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一、前言 在叶轮机械工程设计、计算中,往往使用只计算一个中心S_1流面和若干个迴转S_1流面的准三元迭代解。为了得到更准确的全三元解,文献[1]在全三元迭代计算中使用了翘曲的S_1流面计算机程序。文献[3]则发展了使用曲面拟合方法的翘曲S_1流面程序。在跨声流动存在强烈激波间断时,流面形状会在激波处发生折转,流片厚度也会突变。由于这种三元效应的存在,有必要发展任意翘曲S_1流面跨声程序,进行全三元跨声迭代解。本文在文献[5]的基础上发展了翘曲S_1流面跨声计算机程序。
I. Introduction In the design and calculation of impeller mechanical engineering, quasi-ternary iterative solutions are usually used which only calculate the flow field of a center S_1 and a number of rotating S_1 flow surfaces. In order to get a more accurate all-ternary solution, the literature [1] used the warped S_1 flow surface computer program in the full ternary iterative calculation. Literature [3] developed the warp S_1 surface program using surface fitting method. When there is a strong shock discontinuity across the acoustic flow, the shape of the flow surface will be reversed at the shock wave and the thickness of the flow sheet will be abruptly changed. Due to the existence of such a ternary effect, it is necessary to develop an arbitrary warped S_1 flow surface transonic procedure to carry out all-ternary transonic iterative solution. Based on the literature [5], this paper develops a computer program of warping S_1 flow surface transonic.