郑金海
主要从事港口海岸及近海工程的教学和科研工作。
个性化签名
- 姓名:郑金海
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
海洋工程结构与施工
- 研究兴趣:主要从事港口海岸及近海工程的教学和科研工作。
郑金海,男,1972年2月出生,福建莆田人,教授,博士。1993年毕业于河海大学港口及航道工程专业,1998年获海岸工程博士学位,同年留校任教。2005 年10月~2006年10月获国家留学基金委资助作为中国政府派遣研究员在日本京都大学开展访问研究。现任河海大学交通学院、海洋学院副院长,海岸灾害及防护教育部重点实验室主任。
主要从事港口海岸及近海工程的教学和科研工作,先后主持或参加了国家自然科学基金项目、交通部“九•五”重点科技攻关项目以及长江口深水航道治理等工程的相关科学研究项目 20余项。参加编写专著《中国台湾水利》(第九章“港口建设与海岸开发”),先后在国内外学术刊物和学术会议上发表论文40余篇,编写科研报告9份,研究成果均被设计、建设部门采用,取得显著的经济、社会效益。科研成果中获奖的有:“东江及东江三角洲水沙及数学模型研究”获中国航海科技三等奖(负责完成东江三角洲水沙数学模型研究),“上海泰和路沉管隧道深槽管段抬高对流态和河床变化影响的研究” 获2001年度交通部优秀水运工程咨询成果三等奖(负责完成黄浦江三维水流数学模型计算研究)。先后承担本科生课程《海岸动力学》以及研究生课程《河口海岸工程》的教学工作,指导硕士研究生15名、工程硕士生2名。教学成果中获奖的有:本科课程“海岸动力学”获2002年江苏省高等学校一类优秀课程和2007年度国家精品课程(主讲教师),“《海岸动力学》双语教学” 获第二届江苏省高校多媒体教学课件竞赛三等奖(负责课件建设)。
先后获得“霍英东教育基金会第十届高等院校青年教师奖”、“南京市新长征突击手”和“中国水利学会先进青年科技工作者”等表彰奖励,被列入江苏省高等学校“青蓝工程”优秀青年骨干教师培养人选和教育部新世纪优秀人才支持计划。
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郑金海, Jinhai Zhenga, *, Hajime Maseb, Zeki Demirbilekc, Lihwa Linc
Ocean Engineering 35(2008)1090-1101,-0001,():
-1年11月30日
This paper describes methods and results of research for incorporating four different parameterized wave breaking and dissipation formulas in a coastal wave prediction model. Two formulations assume the breaking energy dissipation to be limited by the Rayleigh distribution, whereas the other two represent the breaking wave energy by a bore model. These four formulations have been implemented in WABED, a directional spectral wave model based on the wave action balance equation with diffraction, reflection, and wave–current interaction capabilities. Four parameterized wave breaking formulations are evaluated in the present study using two high-quality laboratory data sets. The first data set is from a wave transformation experiment at an idealized inlet entrance, representing four incident irregular waves in a slack tide and two steady-state ebb current conditions. The second data set is from a laboratory study of wave propagation over a complex bathymetry with strong wave-induced currents. Numerical simulation results show that with a proper breaking formulation the wave model can reproduce laboratory data for waves propagating over idealized or complicated bathymetries with ambient currents. The extended Goda wave breaking formulation with a truncated Rayleigh distribution, and the Battjes and Janssen formulation with a bore model produced the best agreement between model and data.
Numerical models Random waves Currents Wave action Breaking waves Energy dissipation
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郑金海, Hajime Mase
水科学进展,2008,19(1):78~83,-0001,():
-1年11月30日
基于波作用量守恒方程建立了波流共存场中多向随机波浪传播变形数学模型,模型中考虑了波浪绕射的影响和水流引起的波浪弥散多普勒效应,应用包含水流和地形影响的激破波模式计算波浪破碎的能量耗散,采用一阶上迎风有限差分格式离散控制方程。分别计算了有无近岸流情况下单向和多向随机波浪的波高分布,考虑水流影响的数值计算结果与物理模型实验数据吻合良好, 比较分析表明, 所建立的数学模型能够复演由于离岸流引起的波高增大,可用于波流共存场多向随机波浪传播变形的模拟和预报。
波流共存场, 波作用量守恒方程, 多向随机波浪, 数学模型, 波浪传播变形
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【期刊论文】Depth-dependent expression of obliquely incident wave induced radiation stress
郑金海, Zheg Jinhai**
PROGRESS IN NATURAL SCIENCE, Vol.17, No.9, Septmber 2007,-0001,():
-1年11月30日
The vertically dependent expressions of obliquely incident waves induced radiation stress are derived by use of the second order Stoke5 wave theory within three reglotm of the water colurrm, that is above the mean water levd, below the wave trough levdi, rout between these two levels. Computations radiate that the wave-induced radiation stris below the wave trough level is from the water wave particle velocity only, whereas both the water wave particle velocity and the wave presstrre contribute to the mnr above the wave troughlevel; the vertical variations of the wave-induced radiation stress influenced suhstantiaUy by the velocity component in the direction of wave propagation; the distributions of the wave-induced radiation stresss texor over depth are non-uniform and the proportion of the tensor below the wave trough levl becomes considerable in the shallow water; form water suface to seabed, the reversed variations occur for the predominant tensor components.
second order Stokes wave,, radiation stress,, depth dependent expresslon.,
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【期刊论文】Sandy Beach Profile Response to Sloping Seawalls: An Experimental Study
郑金海, J.-H. Zheng†, D.-S. Jeng‡ and H. Mase§
Journal of Coastal Research, Special Issue 50, 2007,-0001,():
-1年11月30日
Seawalls are commonly used as a tool for coastal defence worldwide. Most previous studies have considered the case of vertical seawalls and descriptions of existing seawalls, rather than the influence of different designs of sloping seawalls on beach erosion. In this study, laboratory investigations of an undistorted moveable bed model were conducted to determine the resulting beach profile of artificial sandy beaches. In the experiments, three different sloping seawalls were considered under erosive wave conditions with a 50-year return period. The coast of Northern Jiangsu Province, China, is used as a case study. To simulate natural conditions, similarity criteria are developed assuming that the energy dissipation per unit volume along the beach profile is uniform and that the wave properties can be properly scaled by Froude criteria. Field surveys of beach profile changes due to the storm surge induced by Typhoon 9711 were taken to validate the experimental model and good agreements were attained. Spatial profile configurations were studied by examining dominant profile features such as the break point bar and the scour trough on the seawall-backed profiles. Experimental results provided a reference for the maintenance of artificial sandy beaches and the design of seawalls on the coast of Northern Jiangsu Province, China.
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【期刊论文】Hydrodynamic impact assessment of coastal reclamation project in semi-enclosed bay
郑金海, Jin-Hai Zheng†, Jia Zhou†, Jin-Yan Liang‡ and Jin-Yu Lin‡
Journal of Coastal Research, Special Issue 50, 2007,-0001,():
-1年11月30日
curvilinear coordinate was developed and the engineering sedimentation method was used to study the possible impact of the coastal reclamation project of Mazucheng in the Meizhou Bay upon the tidal motion and the sediment siltation intensity in the vicinal sea area. The momentum equations were rewritten in the Lagrangian form and the convection term in the momentum equations was discretised by the Eulerian-Lagrangian method instead of the explicit upwind finite differences. The improved Double-Sweep-Implicit method was used to improve the computational stability and accuracy. Three comparative cases were studied on the basis of the satisfactory model verifications with field data. Computations show that the maximum change of tidal discharge would be smaller than 0.8% of that of the whole Meizhou Bay, indicating that the change of the situation of shoals and channels in the Meizhou Bay would be small. Based on numerical computations an optimum layout of the coastal reclamation project was recommended. For the recommended scheme, comparisons of the velocity field before and after the project revealed that there were a bit of changes in the vicinity of the project; the annual siltation intensity was smaller than 0.08m nearby the project site while that was smaller than 0.003m at the locations of main harbours and the navigation channel.
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郑金海, 张晨明, 刘瑛琦, 李同飞
水动力学研究与进展,2008,23(3):275~279,-0001,():
-1年11月30日
本文应用SPH 数值逼近方法离散NS方程,建立了二维水动力数值模型。自由表面施加Dirichlet条件,固边界采用固定壁粒子,镜像粒子施加完全滑移条件,压力采用状态方程计算。提出了内外单元粒子搜索技术,计算效率较传统的DSM和Mihai方法有显著提高,对粒子数量超大的情况也有良好的表现。采用溃坝算例验证模型的可靠性。
SPH方法, 内外单元粒子搜索技术, NS方程
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