Abstract: Flow and heat transfer phenomenon was numerically simulated for a shrouded disk with high positioned air inflow.Conjugate heat transfer calculation was carried out,based upon the mixing length turbulent model,to give prediction on flow field,temperature field and averaged Nusselt number of the disk face.The flow and heat transfer characteristics within the shrouded disk configuration was analysed.Comparison with experimental results was made.The results show that the developed mixing length model is applicable for simulations of shrouded disk with high positioned air inflow.

Key words: Aircraft engine;Turbine wheel;Mixing length;Flow theory;Heat transfer;Numerical calculation

摘要： 采用混合长度模型 ,用共轭数值计算的方法研究了高位垂直进气转静系旋转盘、腔内的流动与换热 ,得到了盘、腔内的流场、温度场、转盘表面的平均努赛尔特数 ,并与实验结果进行了比较。计算结果显示 :扩展的混合长度模型对高位垂直进气转静系旋转盘流动与换热的计算是可行的。

关键词: 航空发动机;涡轮盘;混合长度;流动理论;传热;数值计算