Study on the wave dissipating performance of air bubbles breakwater with air compressibility

Assuming the two phase fluid of water and air as a variable density fluid, the numerical model of the air bubbles breakwater is developed. The continuity equation, the Reynolds average equations and the k - ε model are taken as the governing equations, and the VOF method is used to trace the wave surface. The additional source term of the air curtain model is successfully added to the continuity equation by the Macro of UDF. The transmission coefficients are obtained at the different air amounts and the wave periods agree well with the experimental data, the effects of air compressibility on the wave dissipating performance of the air bubbles breakwater are analyzed with different wave characteristics, length scales and air amounts, then some conclusion, which are meaningful to study the wave dissipating performances of the air bubbles breakwater are obtained.