考虑顶隙的压气机单转子内三维跨音速粘性流场结构的数值模拟

NUMERICAL SIMULATION OF 3D TRANSONIC VISCOUS FLOW STRUCTURE INSIDE A COMPRESSOR ROTOR WITH CONSIDERATION OF TIP CLEARANCE

借助于考虑叶片顶部间隙的压气机转子内跨音速湍流流场的三维数值解，得到了该转子流场中的复杂涡系与波系结构。给出了叶片表面及轮毂面上的壁面流型，分析并揭示了转子叶道内的马蹄涡、通道涡、角涡、尾涡等复杂涡系及其与激波的相互干涉；特别是，分析并揭示了转子叶道内顶隙射流的特点，得到了顶隙附近激波与泄漏流动的干涉形态及泄漏流动的发展，并着重给出了其与激波的干涉形态。

A 3D numerical solution of transonic turbulent flowfield inside a compressor rotor is analyzed with a consideration of blade tip clearance.The complex vortex system structure and shock wave system structure inside this rotor is obtained.Wall flow patterns on the blade surface and hub surface are found out.The complex vortex system structure, such as horseshoe vortex,passage vortex,corner vortex and trailing vortex,and the interaction with shock wave system are researched.Especially,the character of the tip clearance flow inside the rotor passage is revealed,and the interaction between shock wave and tip clearance flow near blade tip and the evolution of tip clearance flow are considered.