第六届国际水动力学会议(ICHD-2004)简介

第六届国际水动力学会议于2004年11月24日至26日在澳大利亚珀斯召开，会议由西澳大利亚大学土木及资源工程学院承办。来自19个国家和地区将近100名水动力学专家参加了会议(其中有来自中国大陆10个单位的13名代表)。会议邀清了3名著名学者各做了一小时的全场大会报告，会议分为船舶设计与海洋工程、海岸工程、离岸工程、环境流体力学与水动力学等四个小组，共交流了80篇论文。     

Transient flexural- and capillary-gravity waves due to disturbances in two-layer density-stratified fluid

Generation of the transient flexural- and capillary-gravity waves by impulsive disturbances in a two-layer fluid is investigated analytically. The upper fluid is covered by a thin elastic plate or by an inertial surface with the capillary effect. The density of each of the two immiscible layers is constant. The fluids are assumed to be inviscid and incompressible and the motion be irrotational. A point force on the surface and simple mass sources in the upper and lower fluid layers are considered. A linear system is established within the framework of potential theory. The integral solutions for the surface and interfacial waves are obtained by means of the Laplace-Fourier transform. A new representation for the dispersion relation of flexural- and capillary-gravity waves in a two-layer fluid is derived. The asymptotic representations of the wave motions are derived for large time with a fixed distance-to-time ratio with the Stokes and Scorer methods of stationary phase. It is shown that there are two different modes, namely the surface and interfacial wave modes. The wave systems observed depend on the relation between the observer's moving speed and the intrinsic minimal and maximal group velocities.     

Homotopy-based analytical approximation to nonlinear short-crested waves in a fluid of finite depth

A nonlinear short-crested wave system, consisting of two progressive waves propagating at an oblique angle to each other in a fluid of finite depth, is investigated by means of an analytical approach named the homotopy analysis method(HAM). Highly convergent series solutions are explicitly derived for the velocity potential and the surface wave elevation. We find that, at every value of water depth, there is little difference between the kinetic energy and the potential energy for nonlinear waves. The nonlinear short-crested waves with a larger angle of incidence always contain the more potential wave energy. With the aid of the HAM, we obtain the dispersion relation for nonlinear short-crested waves. Furthermore, it is shown that the wave elevation tends to be smoothened at the crest and be sharpened at the trough as the water depth increases, and the wave pressure crests and troughs become steeper with increasing incident wave steepness.     

第五届国际亚太海岸工程会议(APAC)简介

<正>第五届国际亚太海岸工程会议(The 5th International Conference on Asian and Pacific Coasts,APAC 2009)于2009年10月13日至16日在新加坡召开,由南洋理工大学承办,我刊特邀编委     

深层搅拌桩在污水管道顶管施工中的应用

就软土地质条件下的污水管道顶管施工进行了研究,提出了采用深层搅拌桩预加固的技术路线,并阐述了主要的施工流程及技术优势,较好地解决了污水管道穿越和施工中所遇到的难题,取得了良好的社会效益和经济效益。     

第九届国际水动力学会议(ICHD-2010)简介

<正>第九届国际水动力学会议(The 9th International Conference on Hydrodynamics,ICHD-2010)于2010年10月11日-15日在上海胜利召开。来自23个国家和地区的近250名     

Effect of compressive stress on the dispersion relation of the flexural–gravity waves in a two-layer fluid with a uniform current

The explicitly analytical solution is derived for the dispersion relation of the flexural–gravity waves in a two-layer fluid with a uniform current. The upper fluid is covered by a thin plate with the presence of the elastic, compressive and inertial forces. The density of each of the two immiscible layers is constant. The fluids of finite depth are assumed to be inviscid and incompressible and the motion be irrotational. A linear system is established within the framework of potential theory. A new representation for the dispersion relation of flexural–gravity waves in a two-layer fluid is derived. The critical value for the compressive force is analytically determined. The dispersion relation for the capillary–gravity with an inertial surface in a two-layer fluid can be obtained in parallel. Some known dispersion relations can be recovered from the present solution.     

第23届国际水波与浮体研讨会（IWWWFB）简介

第23届国际水波与浮体研讨会(International Workshop on Water Waves and Floating Bodies,IWWWFB)于2008年4月12日至16日在韩国济州岛召开,由韩国首尔国立大学船舶与海洋工程系承办,Hang Shoon Choi教授和Yonghwan Kim担任当地组织委员会的共同主席.来自韩、法、挪、日、中、英、美等14个国家的57位代表参加了此次盛会,其中东道主韩裔代表11名.华人与会代表10名,人数位居第二,显示了华人在国际水波动力学界的重要影响.中国4位代表分别来自哈尔滨工程大学、大连理工大学和上海大学;<水动力学研究与进展>特邀编委吴国雄和陈晓波、编委段文洋和卢东强参加了本届会议.