摘要
针对T型透空式防波堤,通过浪高仪采集防波堤前后不同位置波面变化曲线,使用声学多普勒流速仪(NDV)测量不同位置流速随时间的变化,并分析了其相位平均流速的分布。基于VOF法的二维波浪数值水槽,对规则波作用下T型防波堤附近的动力特性进行了计算,水槽模型试验结果和数值模拟结果对比表明,数值计算结果与实验值吻合较好。采用该模型进一步对T型防波堤附近波浪场、流线、紊动动能、紊动动能耗散率变化以及不同尺寸的防波堤消浪效果进行模拟计算,重点分析了入射波高、防波堤入水深度和防波堤宽度变化的影响。
The impact of a T-type wave-permeable breakwater model on wave dynamics is studied in this paper. Firsdy, the wave deformation curves at different positions in gront of and behind the T-type model are collected with wave gauge in an experimental flume. The velocities at the back of the breakwater are also measured with Acoustic Doppler Velocimeter （NDV）, and the phase average velocity is analyzed. Second- ly, using VOF-based 2D ntnnerical wave flume, the flow dynamics near the T-type wave-permeable breakwater under regular wave action are simulated. Comparison between the experimental measurements and results of numerical simulation shows that both agree pretty well, which gives us confidence to apply this numerical model to further studies. Thirdly, the velocity field, streamline, turbulent kinetic energy, turbulent dissipation and wave absorbing effect of the breakwater with different sizes are examined with the numerical model. Finally, this paper also explores the influences of the wave height, depth and width of the breakwater under water on wave dissipation.
出处
《海洋工程》
CSCD
北大核心
2010年第1期50-57,共8页
The Ocean Engineering
基金
国家自然科学基金资助项目(50979008
50909009)
湖南省科学技术厅科技计划重点项目(2009TP4030-2)
