叶轮机通流计算的时间推进方法

TIME-MARCHING METHOD FOR THROUGH-FLOW COMPUTATION OF TURBOMACHINERY

本文首次将时间推进思想应用于通流计算，采用四级龙格—库塔方法求解，根本上解决了目前出现的轴向流动跨音高负荷叶轮机设计困难，初步工作取得了较好结果。作者们预期，时间推进通流计算方法还将弥补现有许多通流计算方法的不足，将在工程设计中发挥更大作用。

The philosophy of time-marching method is firstly applied to through-flow computation.The governing equation is solved with four step Runge-Kutta scheme.In result,the difficulty in the transonic highly-loaded turbomachinery designing,is surmounted.As an example,an axial supersonic inflow shock rotor is designed,with a fine grid,a strong shock is found in flow path.It is indicated that the time-marching method is suitable for through-flow calculation,especially for turbomachinery,whose flow velocity axial component is transonic.