摘要
双层水平板型防波堤是一种新型结构形式的防波堤。该防波堤与波浪相互作用的流场和涡量场变化特性及消浪机理研究,文献中还鲜有论述。文章用数值方法研究了波浪与潜式双层水平板型防波堤的相互作用。以连续方程、雷诺时均方程和k-ε湍流模型作为控制方程,建立了波浪与防波堤相互作用的数值模型。数值研究了潜式双层水平板型防波堤附近的流场、涡量场变化过程和不同位置的波能流。研究结果表明,上层板上方水域的涡动能量损耗及双层板之间和下层板下方波能流的逆向传递是防波堤的主要消浪机理。
Horizontal twin-plate breakwater is a relatively new type of breakwater. At the present, there is little literature available on the velocity field, vorticity field and wave dissipation mechanism of the breakwater. In this pa-per, wave interaction with a submerged horizontal twin-plate breakwater was investigated numerically. To address this issue, the continuity equation, Reynolds time-averaged equations and the two equation k-εmodel were used as the governing equations. Then, a numerical wave model was established. The velocity field and the vorticity field around the breakwater and the wave energy flux along the plate were numerically investigated. The computed re-sults reveal that the wave energy flux between the two plates can transfer to the opposite direction. And the wave en-ergy flux beneath the lower plate has the same transfer mode. The wave dissipation mechanism is the energy loss due to the vortex and the reversion transmission of the wave energy flux.
出处
《水道港口》
2016年第3期255-259,共5页
Journal of Waterway and Harbor
基金
国家自然科学基金支持(51221961)
关键词
双层水平板型防波堤
流场
涡
波能流
消浪机理
twin-plate breakwater
velocity field
vortex
wave energy flux
wave dissipation mechanism
