Study on the Trailing Edge Shock Wave System in Ultra-Transonic Turbine Cascade

In this paper, a detailed flow sketch of trailing edge shock wave system is given by analyzing the flow mechanism in ultra-transonic turbine cascade, and the important role of trailing edge separation shock wave is emphasized. It is concluded that the base pressure influences the trailing edge shock wave intensity in the turbine cascade by affecting the width of the base region. Finally, the above mechanism is applied to the improvement of a cascade S1 calculation program. The numerical calculation and cascade test results show that the program simulation ability of the trailing edge shock wave system in ultra-transonic turbine cascade has been effectively improved.