DNS of the free-surface turbulent flow with constant temperature at the surface

In the present study, Direct Numerical Simulation (DNS) of the free-surface turbulent flow with constant temperature at the surface is performed. Numerical investigations are carried out for two Prandtl numbers 1.0 and 5.0 with the neutral or stable stratification (Ri = 27.6), while a Reynolds number of 200, based on the friction velocity and flow depth. As the results, fundamental turbulent statistic data for the influence of Prandtl number change and buoyancy effect are obtained.