转动园盘上可压缩流动换热的计算研究

本文将边界层方程无因次化,用“BOX”算法求解。研究计算了转动园盘上层流区、过渡区和紊流区的扭矩系数和局部换热系数以及变物性的影响,并研究了适合计算转盘问题的双层紊流模型。

CALCULATION OF COMPRESSIBLE FLOW AND HEAT TRANSFER ON A ROTATING DISK

In this paper, "BOX" method is extended to swirling compressible flow on a body of revolution, after the boundary layer equation is non-dimensionalized. The torque coefficients and local heat transfer coefficients in the laminar, turbulent and transitional flow regions on the rotating disk are calculated. The variable air properties are taken into account in the calculation. The investigation shows that the modified two-layer turbulence model is suitable to the calculation of the flow on the rotating disk. An appropriate analytical formulation of the turbulence model and relevant constants are also given.