Numerical Simulation Study on the Air Amount Scale of Air Bubbles Breakwater

The numerical simulation of air bubbles breakwater was presented in this paper. The two-phase fluid of water and air was assumed as a variable density fluid. The numerical models were developed by FLUENT in order to explore the air amount scale in the system of air bubbles breakwater. The continuity equation, the Reynolds average equations and the standard k-e equations were selected as the governing equations and the interface of water and air was traced by the VOF method, the additional mass source was added to the continuity equation by The Macro of UDF. The relationship between the air amount scale and the length scale was obtained, which illuminated that the air amount scale of air bubbles breakwater agrees to the gravity similarity law. Furthermore, the effect of air amount and the incident wave periods on the performance of the air bubbles breakwater was analyzed.