Abstract
Three dimensional large-eddy simulation (LES) was applied to wind-driven turbulence, and the turbulence structure near the air-water interface and the mechanism of the . scalar transfer across the air-water interface were investigated.In order to capture the deforming air-water interface, an Arbitrary Lagrangian Eulerian formulation (ALE) method was employed. Scalar was assumed to be carbon dioxide (CO2) and the Schmidt number to the water was set to 600. The results show that scalar transfer coefficient predicted by the LES is in good agreement with that obtained by laboratory experiments and the scalar transfer across the air-water interface is mainly controlled by the longitudinal vortices on the liquid side.
