Comparative Numerical Study of Turbulent Forced Convection in a Shell and Tube Heat Exchanger Between the Simple Case and With Cross Baffles

Numerical investigations in two models of shell and tube heat exchangers are performed using CFD FLUENT commercial software based on the k-e model, the conservation equations of mass, momentum and energy are solved by the finite volume method. The dynamic and thermal behavior of the water circulating in the two-shell side will be analyzed in detail. The results show that the fluid is completely affected by the baffles, the velocity increases by 12% in the case without baffles and by 16% in the case with baffles, the heat transfer coefficient, the pressure drop, the total heat transfer rate, the pumping costs increase by 1,86% and 21,67% and 1,11%, and 21,68% successively.