Turbulent mass transport over wind-waves by parallel numerical simulations

Mass transport processes over the gas/liquid interface of wind waves have been investigated via parallel numerical simulations. A one-fluid model based on fixed Eulerian grid is developed where the moving interface is captured as part of the numerical solution of the flow field. The numerical model is robust for simulations of multi-phase fluid dynamics even with extremely deformed moving interfaces, and is designed so as to easily and efficiently implement large scale simulations on massively parallel computers with distributed memory. We report in this paper some preliminary results on the flow structures in the vicinity of the interface and their relationships to the passive scalar transport. (author)