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对于轴流式叶轮机械叶栅的完全反问题——规定叶栅前后气流参数及叶片表面速度分布而设计叶栅,本文发展了吴仲华教授创立的中心流线法,得出了一个程序非常简单、计算非常快捷的工程解法。文中对初值选定、迭代修正、光滑措施与决定稠度等均作了讨论,给出了可用的办法;而且还论述了本法的适用范围。已用此法作了一些低跨声速平面叶栅设计的试算,说明本法是有效的,可以用袖珍计算机进行编程设计。此法可以推广应用于设计任意迴转流面上有熵增、跨声速、无强激波的轴流式、混流式和径流式叶轮机械的叶栅。
For the complete inverse problem of the axial flow impeller mechanical cascade - the provisions of the blade before and after the airflow parameters and the blade surface velocity distribution of the design of cascades, the development of Professor Wu Zhonghua created by the center streamline method, drawn a program is very simple, Calculate a very fast engineering solution. In this paper, the selection of initial value, iterative correction, smooth measures and determination of consistency are discussed, given the available methods; but also discusses the scope of application of this law. This method has been made with some low transonic plane cascade design trial calculation, indicating that this method is valid, you can use a pocket computer programming. This method can be widely applied to the design of cascades of axial flow, mixed flow and radial flow impeller with entropy increasing, transonic speed and no strong shock on any rotating flow surface.