Abstract: Unlike widely used turbulence models,the GAO YONG equations use no empirical coefficients or wall functions.In this paper,two dimensional,stationary,and incompressible transitional/turbulent boundary layer with zero pressure gradient is numerically simulated with GAO YONG turbulence model.Employing staggered grid arrangement,an incompressible SIMPLE code with a second order QUICK scheme is used.The calculation successfully simulates the flow and predicts the fundamental properties of the boundary layer such as C_f,the log law,and the defect law,etc,which are close to the experimental data.All the results further verify the adaptability of the equations to real turbulent flow.