Numerical Analysis of Heat Transfer and Pressure Drop in a Channel Equipped with Triangular Bodies in Side-By-Side Arrangement

The focus of presented numerical study is to investigate the effect of Reynolds number with respect to both heat transfer and flow characteristics in a channel equipped with two triangular bluff bodies in side by side arrangement. (SST) k turbulence model is used for simulations and the second order upwind numerical scheme and SIMPLE (pressure implicit with splitting of operations) algorithm are utilized to discretize the governing equations. The flow is assumed twodimensional and the calculations are performed for a Reynolds number range varying from 10,000 to 40,000 under steady state conditions. The calculations are carried out on a four-noded structured mesh near channel wall and a three-noded unstructured mesh near triangular bodies in order to have a better description of the boundary layer. The variation of Nusselt number, skin friction coefficient along the channel and Nusselt number versus Reynolds number were presented. The calculations are also compared to the results obtained by H. Chattopadhyay. The comparison shows that the numerical results are of good agreement with the results obtained from that of Chattopadhyay, H. It was concluded that at Re=40,000 the best achievement in Nusselt number was obtained as 463. Keywords-Triangular bluff body, side-by-side arrangement, heat transfer enhancement.