【摘要】 从吴仲华教授最早提出的两类流面交叉求解三元流动的理论出发,本文给出一种任意通流截面上的“流面坐标”迭代法,采用适合各类叶轮机械的两组非正交流面坐标,以及沿这两组坐标方向速度梯度方程的迭代求解,得到了叶轮机械内部的完全三元流场。 计算实例给出了均为扭曲的两类流面形状,并与普通的二元流面解进行了比较,在一个试验过的离心压气机叶轮的计算中还与测量结果进行了比较,结果是满意的.更多还原

【Abstract】 Starting from the theory for solving the three-dimensional flow by cross iteration of two families of stream-surfaces, proposed first by Professor Wu, the present paper gives a "stream-surface coordinate" iterative method in arbitrary through flow sections. Through the use of two sets of non-orthogonal stream-surface coordinates suited for various kind of turbomachines, velocity gradient equations along these two sets of coordinate directions are iteratively solved, and the complete three-dimensional flow fields in turbomachinery are obtained.The results of numerical examples have given two families of stream-surfaces, both twisted in their shape. A comparison has been made with the result, of the common-used two-dimensional stream-surface solution. The calculation has also been made for a. tested centrifugal compressor impeller, the comparison with measurement result is satisfactory.更多还原