A numerical calculation has been carried out to investigate the mixed convection heat transfer in inclined rectangular ducts with wall transpiration. The vorticity-velocity method is employed to solve the governing equations. The present paper particularly addresses the effects of the independent parameters, namely, mixed convection parameter DELTA, modified Rayleigh number Ra~*, wall Reynolds number Re_w and aspect ratio gamma. The predicted results show that either wall injection or wall suction has a considerable impact on the flow structure and heat transfer performance. Additionally, it was found that for injection case (Re_w<0), the Nusselt number Nu is retarded with an increase in the wall Reynolds number Re_w, but the trend is reverse for the suction flow (Re_w>0).
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