摘要
基于δ-SPH方法(Smoothed Particle Hydrodynamics;光滑粒子流体动力学方法),建立了波浪与浮式防波堤相互作用的数值模型,开展了波浪与新型带反浪弧浮箱式防波堤相互作用的物理模型试验,利用模型试验结果验证了数值模拟结果的合理性。通过改变波浪参数和锚链长度,对比分析了带反浪弧浮箱式防波堤和矩形浮箱式防波堤的透射系数、反射系数、运动响应及流场特性,探讨了带反浪弧浮箱式防波堤的消浪机理。研究表明:新型带反浪弧浮箱式防波堤对较长周期波浪具有更好的掩护效果;与矩形浮箱式防波堤相比,带反浪弧浮箱式防波堤在波浪作用下会产生更多的涡旋,耗散更多的波浪能量;当锚链为部分拖地状态时,继续增大锚链长度对两种浮式防波堤运动响应和透射系数影响较小。
Based on theδ-SPH method(Smoothed Particle Hydrodynamics),the numerical model of the interaction between waves and a floating breakwater was established,and the physical model test of the interaction between waves and a new type of pontoon breakwater with anti-arc surface was carried out.The rationality of the numerical simulation results was verified by the model test results.By changing the wave parameters and the length of the anchor chain,the transmission coefficient,reflection coefficient,motion response and flow field characteristics of the pontoon breakwater with anti-arc surface and the rectangular pontoon breakwater were compared and analyzed.Then,the wave dissipation mechanism of the pontoon breakwater with anti-arc surface was discussed.The results show:the new type of pontoon breakwater with anti-arc surface has better shielding effect on long period waves;compared with the rectangular pontoon breakwater,the pontoon breakwater with anti-arc surface produces more vortices and dissipate more wave energy under the action of waves;when the anchor chain is partially towed,increasing the length of anchor chain has little effect on the motion response and transmission coefficient of two kinds of floating breakwaters.
作者
王晓亮
陈永焜
刘勇
王兴刚
WANG Xiao-liang;CHEN Yong-kun;LIU Yong;WANG Xing-gang(College of Engineering, Ocean University of China, Qingdao 266000, China;Nanjing Hydraulic Research Institute, Nanjing 210024, China)
出处
《水道港口》
2021年第5期567-581,共15页
Journal of Waterway and Harbor
基金
国家自然科学基金项目(51725903)。
关键词
δ-SPH方法
浮箱式防波堤
反浪弧
消浪特性
运动响应
δ-SPH method
floating breakwater
anti-arc surface
wave dissipation characteristics
motion response
