轴流透平级优化设计方法的理论研究

本文在分别研究轴流途平级设计中各个环节优化设计方法的基础上，提出了一个轴流透平级优化设计的方法，并给出了研制化透平级的技术路线。其中主要优化设计环节如：透平级子午通道形状以及叶片几何参数的最优选择；叶片扭曲规律的最优选择；叶型表面最优流速分布的理论计算方法；叶栅璧面边界层以及叶栅损失的理论计算法；由背弧最优流优流速分布以及叶型截面厚度分布求叶型的计算方法；给定叶栅壁面流速分布求叶型坐标的理论计算方法。

THEORETICAI RESEARCH OF AN OPTIMUM DESIGN METHOD FOR THE AXIAL TURBINE STAGE

A optimum design method and the technical. Approach for dovoloping line the axial turbine stage are presented in this paper. This method is based on the theoretical research of the optimum design method for the each design parts in the axial turbine.The main design parts of an axial turbine stage containe the following subjects "The optimum selection of the geometrics of blade and meridional passage of the axial turbine stage", "Optimum Selection of the twist of the turbine blade", "The method of calculation of the optimum velocity distribution on arbitrary stream surface revolution for the compressible flu-I'd flow in the cascades of turbomachine", "The calculation method of surface coordinates of the cascades, it is based on the given distribution of velocity on the suction surface and distribution of she suction thickness", "the method of calculation of the surface coordinates of cascade. It is based on the optimum distribution of the surface velocity".