Large Eddy Simulation of Turbulent Channel Flow by One-Equation Modeling

Abstract

Turbulent flow in a straight rectangular channel is numerically studied by using Large Eddy Simulation. Cyclic boundary conditions are imposed on the velocity and pressure in the downstream and spanwise directions, while the no-slip boundary condition is imposed on the walls. Both the Smagorinsky model and One-equation modeling are applied, and from a comparison between the computed results, the importance of the diffusion term in SGS turbulent energy balance is pointed out.