Abstract
A numerical method was proposed to solve time-mean conjugate heat transfer in complex turbulent flows. The method is based on RANS, in which eddy thermal diffusivity is estimated by the turbulence statistics obtained by large eddy simulation. The proposed method was applied to examine the effect of endwall modification on total heat transfer in inclined pin-fin channels with a flat or wavy endwall. As a result, it is found that the wavy endwall shows an effect to enhance endwall heat transfer than flat endwall, while it shows less heat transfer rate on the pin surface. Thus, it is found that the benefit of wavy endwall depends on Biot number, which determines the heat transfer contribution of pin-fin surface to the total heat transfer area.
