粘性跨音速叶栅绕流的数值模拟及前驻点处理  

NUMERICAL SIMULATION OF VISCOUS TRANSONIC FLOW THROUGH CASCADE AND HANDLING OF STAGNANT POINT

作　　者：刘顺隆 李淑英 郑群 

机构地区：[1]哈尔滨船舶工程学院

出　　处：《工程热物理学报》1993年第3期268-271,共4页Journal of Engineering Thermophysics

摘　　要：一、前言 对于粘性跨音速叶栅绕流,直接用N-S方程数值求解仍有很多困难,因此利用边界层理论考虑流体的粘性效应,进行有粘—无粘迭代计算是粘性流体叶栅绕流的很好模拟。采用多重网格有限体积法进行跨音速叶栅的无粘流计算,具有易于适应复杂几何形状,保证差分格式的守恒性、能较准确地计算激波。加速收敛等良好特性。为了提高精度和简化计算,在求解边界层微分方程时,采用了Illingworth变换方法,用驻点方程的相似性解给定边值速度剖面。Nonviscous transonic cascade flow is calculated first by finite volume method and multi-grid , and then boundary layer equation is solved with Prandtl mix length model of full turbulent and front velocity distribution which obtained from resembling solution of stagnant point equation. Thereafter, viscous and non-viscous calculations are iterated to simulate viscous transonic flow through cascade taking penetrating velocity as connecting condition. The results indicate that the simulation is excellent.

关 键 词：跨音速 叶栅 绕流 数值模拟 

分 类 号：TK14[动力工程及工程热物理—热能工程]