An efficient combustion system is needed in a gas turbine combustor. The objective of this study is to investigate the effects of varying upstream flow parameters on the velocity and temperature profiles on the surface of a selectively perforated porous mat. To achieve this objective a three-dimensional computational model was developed by using higher-order turbulence models. For the computations of reacting flows, the PDF model was employed. This model involves the solution of transport equations for a single conserved scalar (the mixture fraction). Therefore, transport equations for individual equations are not solved. Instead, individual component concentrations for the species are derived from the predicted mixture fraction distribution. Computations obtained through this research show quite reasonable results and presented in this paper.

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