网箱式浮防波堤消浪效果的数值研究

Numerical simulation research on wave dissipating performance of net cage floating breakwater

文章提出了一种新型的网箱式浮防波堤,为了研究其消浪性能及影响因素,采用FLOW-3D软件对其进行了数值研究。模拟过程中消能网采用多孔介质进行模拟,波浪采用5阶斯托克斯波。计算了相对宽度、相对吃水、消能网间距和孔隙率对浮防波堤消浪效果的影响规律。通过数值分析得到:针对本文计算的波浪条件、模型及计算范围,相对宽度、相对吃水和孔隙率对网箱式浮防波堤的消浪效果影响相对较大,而消能网间距对浮防波堤的消浪效果影响相对较小。其中消浪效果与相对宽度、相对吃水呈正相关,与消能网间距和孔隙率呈负相关。

A new type of net cage floating breakwater was proposed in this paper,and to study its wave dissipation effect and influencing factors,a numerical study was carried out by using FLOW-3D software.During simulation the energy dissipation net was simulated by porous media model,and the wave was generated by 5th order Stokes wave theory.The influence law of relative width,relative draught,net spacing and porosity on the wave dissipation effect of the floating breakwater was explored.Numerical analysis shows that for the wave conditions,model and calculation range in this paper,the relative width,relative draught and porosity have a relatively large influence on the wave dissipation effect of the net cage floating breakwater,while the net spacing has a relatively small influence.Among them,the wave dissipation effect is positively correlated with relative width and relative draught,and negatively correlated with net spacing and porosity.