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本文考虑了非线性波和弱非弹性多孔介质的耦合,推导了在弱非弹性多孔介质上传播的浅水波方程,得到了依赖于土参数的椭圆余弦波波面方程,以及土床内孔隙水压力的关系式.根据浅水波相速度和衰减率的计算结果,分析了浅水波在不同土质底床上的传播特性,具体讨论了在椭圆余弦波作用下土床中孔隙水压力随深度和波周期的变化关系,通过和线性波结果的比较分析,给出了该理论的适用范围,并得到他人实验结果的验证. 相似文献
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在水深较小,原泥面为斜坡岩基的场区建造护岸时,应重视护底块石的设计。波浪在护底块石的上方发生破碎,卷破波对护底块体产生沿海侧方向的拖拽作用,从而导致护底块石失稳并引起护面块体的滑动。结合某护岸加固工程的方案设计和物理模型试验成果,提出在护底设计中,应结合增加护底块石质量与增大原泥面糙率两种措施制定护底块石方案;有条件时可通过增加护底长度或埋深的方式设置护底。 相似文献
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《船舶与海洋工程学报》2012,(3):360
Marseille,France,7-10 April 2013 The International Workshop on Water Waves and Floating Bodies is an annual meeting of engineers and scientists with a particular interest in water waves and their effects on floating and submerged bodies.In the organization and conduct of the Workshop, 相似文献
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2008年是不平常的一年.从年初的雪灾.到四川大地震.再到南方的洪水,连续的自然灾害为国内的快运业添上了凝重的一笔。而下半年的金融风暴又再次波及到这个行业.作为中国私营公路快运业的龙头企业.天地华宇也与其它业内公司一样,不得不直面这些挑战。 相似文献
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《船舶与海洋工程学报》2014,(4):448-448
About the Workshop...
The International Workshop on Water Waves and Floating Bodies is an annual meeting of mathematicians and engineers with a particular interest in water waves and their effects on floating and submerged marine structures. The IWWWFB was initiated by Professor D.V. Evans (University of Bristol) and Professor J.N. Newman (MIT) following informal meetings between their research groups in 1984. First intended to promote communications between workers in the UK and the USA, the interest and participation quickly spread to include researchers from many other countries around the world. The workshop places particular emphasis on the participation of younger researchers, on the stimulation of discussions between engineers and scientists, and to the presentation of preliminary basic scientific work before its publication elsewhere. The workshop is an important reference point for organizing and spreading knowledge in this area. In particular, the workshop proceedings are freely accessible through the dedicated internet address www.iwwwfb.org where all contributions from 1986 on can be found. 相似文献
The International Workshop on Water Waves and Floating Bodies is an annual meeting of mathematicians and engineers with a particular interest in water waves and their effects on floating and submerged marine structures. The IWWWFB was initiated by Professor D.V. Evans (University of Bristol) and Professor J.N. Newman (MIT) following informal meetings between their research groups in 1984. First intended to promote communications between workers in the UK and the USA, the interest and participation quickly spread to include researchers from many other countries around the world. The workshop places particular emphasis on the participation of younger researchers, on the stimulation of discussions between engineers and scientists, and to the presentation of preliminary basic scientific work before its publication elsewhere. The workshop is an important reference point for organizing and spreading knowledge in this area. In particular, the workshop proceedings are freely accessible through the dedicated internet address www.iwwwfb.org where all contributions from 1986 on can be found. 相似文献
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Green-Naghdi (G-N) theory is a fully nonlinear theory for water waves. Some researchers call it a fully nonlinear Boussinesq model. Different degrees of complexity of G-N theory are distinguished by “levels” where the higher the level, the more complicated and presumably more accurate the theory is. In the research presented here a comparison was made between two different levels of G-N theory, specifically level II and level III G-N restricted theories. A linear analytical solution for level III G-N restricted theory was given. Waves on a planar beach and shoaling waves were both simulated with these two G-N theories. It was shown for the first time that level III G-N restricted theory can also be used to predict fluid velocity in shallow water. A level III G-N restricted theory is recommended instead of a level II G-N restricted theory when simulating fully nonlinear shallow water waves. 相似文献
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近年来水波调控在理论研究和实验研究方面取得了重要进展,为海岸防护结构设计提供了新思路。本文以浅水方程为研究对象,结合基于变换介质理论的水表面波调控方法,根据折射率和水深的对应关系设计了新型系列消波潜堤结构。所设计的消波结构,由底部梯度变化的结构构成,采用COMSOL软件对水波通过结构物的折射和绕射进行数值模拟,通过参数选优,得到不同入射频率,达到最优消波能力的潜堤宽度、航道宽度、宽度比、平台长度等结构参数,对港口海岸防护、水产养殖具有参考和指导意义。 相似文献
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