Numerical Computation of Turbulent Flow and Heat Transfer in a Radially RotatingChannel with Wall Conduction

[摘要] This work is concerned with numerical computation of turbulent flow and heat transfer in experimental models of a radially rotating channel used for turbine blade cooling.Reynolds-averaged Navier-Stokes and energy equations with a two-layer turbulencemodel are employed as the computational model of the flow and temperature fields. Thecomputations are carried out by the software package of “CFX-TASCflow”. Heat loss from the channel walls through heat conduction is considered. Results at variousrotational conditions are obtained and compared with the baseline stationary cases. Theinfluences of the channel rotation, through-flow, wall conduction and the channelextension on flow and heat transfer characteristics are explored. Comparisons of thepresent predictions and available experimental data are also presented.

[学科分类] 力学，机械学