Sigma Muhendislik ve Fen Bilimleri Dergisi, vol.21, no.3, pp.83-92, 2002 (National Refreed University Journal)
In this study, considering the flow is laminar, steady and incompressible, the flow and heat transfer through a pipe employing a vertical obstacle are investigated in cylindrical-coordinates with 2 dimensional numerical analysis. To form a model vertical and horizontal components of the continuity, energy, momentum equations and vorticity-stream function method are included. These equations to be solved simultaneously are discretized employing the finite difference method and they are solved using a computer that has been written in Fortran. Through this study, the effects of different ratios relating to the obstacle and the position of the obstacle from pipe entrance on the streamlines and heat transfer are investigated. Air, water and clean engine oil with Prantl numbers of 0.7 , 7.0 , 546 are let flow through the pipe and the streamlines and heat transfer for the Reynolds numbers of 50 and 500 are investigated. Finally, it is shown that the results obtained are consistent with the reported results in the literature.