Wave effects on the anti-liquefaction of the seabed around composite bucket foundation of offshore w

来源 :水动力学研究与进展B辑 | 被引量 : 0次 | 上传用户:jbhjyh12345678
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
By using the open-source software OpenFOAM and the grid generation tool the integrated computer engineering and manufacturing code for computational fluid dynamics(ICEM CFD),a computational fluid dynamics-computational structural dynamics(CFD-CSD)coupling model is established.The dynamic response and the liquefaction of the seabed around the composite bucket foundation of the offshore wind turbines in the Xiangshui area of Jiangsu Province are investigated.The pore water pressure,the effective stress,the liquefaction depth and the anti-liquefaction effect of the overlying stones are analyzed.It is shown that the seabed around the composite bucket foundation will be liquefied under 50 year return waves,the liquefaction width is approximately 1/3 of the wavelength,and the maximum liquefaction depth is approximately 1/4 of the wave height.In addition,the overlying stones provide an effective anti-liquefaction method.Thicker,less porous overlying stones have a better anti-liquefaction effect.
其他文献
In natural rivers,patches of vegetation generally expand over their steady wake region in the streamwise direction,forming elongated patches with length(L)greater than their width(b).This paper studies how the wake flows and the vortices develop as the em
We investigate the flow around a circular cylinder vibrating with a prescribed magnitude and frequency at Reynolds number 230.The Navier-stokes equations and the adjoint equations are solved to search for the 3-D nonlinear optimal initial perturbation,whi
The tip clearance induces the tip leakage vortex(TLV),which has a great impact on the pressure fluctuation characteristics of the multiphase pump.To investigate the effect of the tip clearance on the pressure fluctuations,based on the Reynolds time-averag
A runaway transition after the pump power interruption and the simultaneous guide vane servomotor failure is one of the most dangerous and complex transitions for a pumped storage power system(PSPS).This paper analyzes the fluctuation behavior and mechani
Heat transfer and energy performance of Al2O3/water nanofluid in a 90° bend with circular cross-section are investigated in the range of Reynolds number(Re)from 5 000 to 30 000,particle volume concentration(Φ)from 0.005%to 4%,Schmidt number(Sc)from 9 870
The pollution sources identification model is presented by the coupling of the river water quality model and particle swarm optimization(PSO)algorithm to estimate pollution sources from the measured/simulated contaminant concentration in the river.The“twi
In this paper,a coupled level set and volume of fluid,immersed boundary(CLSVOF/IB)method is proposed and implemented into the interFoam solver of the OpenFOAM to simulate the gas-liquid two-phase flows,involving the gas-liquid and fluid-structure interfac
Unsteady cavitation causes noise,damage,and performance decline in the marine engineering and fluid machinery systems.Therefore,finding a method to control the cavitation and its destructive effects is important for the industrial applications.In this wor
The spatiotemporal evolution of hairpin vortex structures in a fully developed turbulent boundary layer is investigated qualitatively and quantitatively by using two image methods.In this paper,the moving single-frame and long-exposure(MSFLE)image method
水电站计算机监控系统在电站自动化控制中发挥着非常重要的作用,其实时数据为电站的运行分析、趋势判断和事故处理提供了有力手段.国电南京自动化股份有限公司以洪家渡水电站背景,基于时序数据库的数据存储引擎,为监控、统计、分析等提供数据访问服务.该时序数据存储引擎能够提供海量的数据存储能力,同时兼顾极高的数据访问性能,为计算机监控系统提供可行的数据查询存储方案.