NUMERCIAL SIMULATION OF LAMINAR AND TURBULENT BOUNDARY LAYERS

Abstract

The present work is concerned with the numerical simulation of the laminar and turbulent boundary layers. In the present study the governing boundary layer equations are transformed using Falkner—Skan transformation to have the boundary layer thickness almost independent of streamwise distance. The transformed partial differential equations are solved by using'KellersBox Method' which is unconditionally stable. The model adopted in the present study is eddy viscosity rodel of Cebeci and Smith (11744). The laminar boundary layer flows both for steady and unsteady cases are predicted and compared with the reported analytical results. For the turbulent boundary layers, six experiments with differing flow characteristics were selected from the data compiled by Coles and Hirst (1968). The boundary layer characteristics for these runs were predicted and compared , with the experimental data as well as with the results of two equation k.--* model of Singhal and Spalding (1975). It is found that the predictiOn5 from the present study are in better agreement with the experimental data, than the results of two equation k. --6 model.