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Numerical analysis on water exchange and its response to the coastal engineering in the Yueqing Bay in China 被引量:5
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作者 LI Jia YAO Yanming LI Xiaoyan ZHANG Hongwei 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2008年第z1期60-73,共14页
On the basis of a numerical model of tidal current using Delft3D , the distribution of the semi-exchange time of water was simulated in the Yueqing Bay here. The result showed that the semi-exchange time was about mor... On the basis of a numerical model of tidal current using Delft3D , the distribution of the semi-exchange time of water was simulated in the Yueqing Bay here. The result showed that the semi-exchange time was about more than 6 d in the bay end, and about 1~2 d in the bay mouth. Besides, based on the calculation of the semi-exchange time before and after the Xuanmen Dam project, a comparison between them was further carried out. And the same work was also done with the recent reclamation projects in the Yueqing Bay as well. The results showed that the change in semi-exchange time caused by the Xuanmen Dam project was about 6 d increase near the dam and 4.5 d increase at the bay end. And it was about 5 d increase at the bay end and 1 d increase at the mouth of the bay caused by the recent reclamation projects. 展开更多
关键词 water exchange coastal engineering semi-exchange time Yueqing Bay in China
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23rd International Conference on Coastal Engineering 4-9 October 1992, Venice, ITALY
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《China Ocean Engineering》 SCIE EI 1990年第4期491-492,共2页
Organized by Consiglio Nazional delle Ricerche (CNR), Gruppo Nedonale diIdraulice(GNI) with the support of the Ministry of Public Works and under the auspices of theCoastal Engineering Research Council(CERC) of the Am... Organized by Consiglio Nazional delle Ricerche (CNR), Gruppo Nedonale diIdraulice(GNI) with the support of the Ministry of Public Works and under the auspices of theCoastal Engineering Research Council(CERC) of the American Society of CivilEngineering(ASCE), and co-sponsored by the international Association for Hydraulic of Navi-gation Congress(PIANC) and by the Associazione di Ingegneria Offshore e Marina(AIOM).Aim 展开更多
关键词 ITALY International Conference on coastal engineering 4-9 October 1992 VENICE
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The 7th National Symposium on Coastal Engineering Zhuhai, China
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《China Ocean Engineering》 SCIE EI 1993年第4期481-482,共2页
The 7th National Symposium on Coastal Engineering was held in Zhuhai, China, fromNovember 13th to 16th, 1993, co-sponsored by —Chinese Ocean Engineering Society —Harbour Engineering Committee, Chinese Society of Civ... The 7th National Symposium on Coastal Engineering was held in Zhuhai, China, fromNovember 13th to 16th, 1993, co-sponsored by —Chinese Ocean Engineering Society —Harbour Engineering Committee, Chinese Society of Civil Engineering —Harbour and Waterway Committee, Chinese Society of Hydraulic Engineering —Coast and Estuary Committee, Chinese Ocean and Limnology Society —Guangdong Ocean and Limnology Society —Guandong Society of Oceanograph 展开更多
关键词 China The 7th National Symposium on coastal engineering Zhuhai
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THE FIFTH NATIONAL SYMPOSIUM ON COASTAL ENGINEERING
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《China Ocean Engineering》 SCIE EI 1989年第1期94-94,共1页
Sponsors Chinese Ocean Engineering Society (COES) Harbour Engineering Committee, Chinese Society of Civil Engineering Harbour and Waterway Committee, Chinese Society of Hydraulic Engineering Tianjin Society of Water T... Sponsors Chinese Ocean Engineering Society (COES) Harbour Engineering Committee, Chinese Society of Civil Engineering Harbour and Waterway Committee, Chinese Society of Hydraulic Engineering Tianjin Society of Water Transport Engineering Shanghai Ocean and Limnology Society The Authority of Comprehensive Improvement for Yangtze River Estuaty and Taihu Trainage Area. 展开更多
关键词 THE FIFTH NATIONAL SYMPOSIUM ON coastal engineering
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Overview of Moving Particle Semi-implicit Techniques for Hydrodynamic Problems in Ocean Engineering 被引量:2
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作者 Fengze Xie Weiwen Zhao Decheng Wan 《Journal of Marine Science and Application》 CSCD 2022年第3期1-22,共22页
With the significant development of computer hardware,many advanced numerical techniques have been proposed to investigate complex hydrodynamic problems.This article aims to provide a detailed review of moving particl... With the significant development of computer hardware,many advanced numerical techniques have been proposed to investigate complex hydrodynamic problems.This article aims to provide a detailed review of moving particle semi-implicit(MPS)techniques and their application in ocean and coastal engineering.The achievements of the MPS method in stability and accuracy,boundary conditions,and acceleration techniques are discussed.The applications of the MPS method,which are classified into two main categories,namely,multiphase flows and fluid-structure interactions,are introduced.Finally,the prospects and conclusions are highlighted.The MPS method has the potential to solve practical problems. 展开更多
关键词 MPS technique Ocean engineering coastal engineering Stability Accuracy Boundary conditions Acceleration techniques Multiphase flows Fluid-structure interactions
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Tidal Flat Morphodynamic Processes of the Yangtze Estuary and Their Engineering Implications 被引量:2
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作者 杨世伦 丁平兴 +2 位作者 朱骏 赵庆英 茅志昌 《China Ocean Engineering》 SCIE EI 2000年第3期307-320,共14页
The intertidal flats are classified as 'attached bar', 'spit' and 'isolated bar' in relation to the land, and 'broad flat', 'sharp bank' and 'eroded cliff' according to ... The intertidal flats are classified as 'attached bar', 'spit' and 'isolated bar' in relation to the land, and 'broad flat', 'sharp bank' and 'eroded cliff' according to the shape of the cross-shore profile. Tidal currents on the flat are basically back and forth along the river channel banks but gyratory on the seaward side of the Chongming Island. The flow velocity on the intertidal flat is gradually reduced with increasing elevation. The river discharge strengthens ebb flows and modifies current asymmetry especially on the lower flat in neap tide, although hydrodynamics over the tidal flat is tide-dominated. The wave height on the tidal flat is normally limited to a few decimeters although it changes with water depth, slope and wind. Suspended sediment concentration over the tidal flat is typically hundreds to thousands of mg / 1. Although the delta has grown rapidly in history, the rate of growth is different in different periods. A maximum advancing rate of 330 m / a was recently found in the central part of the river month towards the sea. In view of the natural conditions, reclamation of higher intertidal flat (above the mean tidal level) in advancing coasts is suggested, which would leave broad wetlands for wild lives. In addition, some possible influences of coastal engineering projects and the future natural backgrounds of engineering under reduction in riverine sediment supply and sea level rise are addressed. 展开更多
关键词 intertidal flat coastal engineering Yangtze Estuary China
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Probabilistic Approach of Coastal Defense Against Typhoon Attacks for Nuclear Power Plant 被引量:1
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作者 刘德辅 韩凤亭 +3 位作者 庞亮 李华军 谢波涛 王风清 《China Ocean Engineering》 SCIE EI 2010年第2期265-275,共11页
With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power pla... With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power plant should be calibrated because of the increasing threat of typhoon disaster and severe consequences. This paper discusses the probabilistic approach of definitions about "probable maximum typhoon" and "probable maximum storm surge" in nuclear safety regulations of China and has made some design code calibrations by use of a newly proposed Double Layer Nested Mtdti-objective Probability Model (DLNMPM). 展开更多
关键词 TYPHOON nuclear power plant coastal engineering code calibration double layer nested multi-objective probability model
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Theoretical Model and Random Simulation for Nonlinear Interaction of Irregular Waves with Vertical Wall 被引量:3
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作者 Hong, Guangwen Feng, Weibing 《China Ocean Engineering》 SCIE EI 1993年第3期263-288,共26页
According to the theoretical solutions for the nonlinear three-dimensional gravity surface waves and their interactions with vertical wall previously proposed by the lead author, in this paper an exact second-order ra... According to the theoretical solutions for the nonlinear three-dimensional gravity surface waves and their interactions with vertical wall previously proposed by the lead author, in this paper an exact second-order random model of the unified wave motion process for nonlinear irregular waves and their interactions with vertical wall in uniform current is formulated, the corresponding theoretical nonlinear spectrum is derived, and the digital simulation model suitable to the use of the FFT (Fast Fourier Transform) algorithm is also given. Simulations of wave surface, wave pressure, total wave pressure and its moment are performed. The probability properties and statistical characteristics of these realizations are tested, which include the verifications of normality for linear process and of non-normality for nonlinear process; the consistencies of the theoretical spectra with simulated ones; the probability properties of apparent characteristics, such as amplitudes, periods, and extremes (maximum and minimum, positive and negative extremes). The statistical analysis and comparisons demonstrate that the proposed theoretical and computing models are realistic and effective, and estimated spectra are in good agreement with the theoretical ones, and the probability properties of the simulated waves are similar to those of the sea waves. At the same time, the simulating computation can be completed rapidly and easily. 展开更多
关键词 ALGORITHMS coastal engineering Fast Fourier transforms Mathematical models PROBABILITY Random processes Retaining walls Surface waves
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Recent changing patterns of the Changjiang(Yangtze River) Estuary caused by human activities 被引量:1
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作者 WANG Chenglong ZHAO Yifei +2 位作者 ZOU Xinqing XU Xinwanghao GE Chendong 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2017年第4期87-96,共10页
To evaluate the controlling factors for coastline change of the Changjiang(Yangtze River) Estuary since 1974,we extracted the mean high tide line from multi-temporal remote sensing images that span from 1974 to 2014... To evaluate the controlling factors for coastline change of the Changjiang(Yangtze River) Estuary since 1974,we extracted the mean high tide line from multi-temporal remote sensing images that span from 1974 to 2014 at 2-year intervals.We chose 42 scenes to constrain the changing pattern of the Changjiang Estuary coastline,and implemented GIS technology to analyze the area change of the Changjiang(Yangtze) Subaerial Delta.Runoff,sediment discharge and coastal engineering were withal considered in the analysis of the coastline changes.The coastline has transgressed seaward since 1974,and a part of it presents inter-annual variations.The area of the Changjiang Subaerial Delta increased by 871 km2,with a net accretion rate of 21.8 km2/a.Based on the change of sediment discharge due to the major projects in the Changjiang River Basin,we divided the changing pattern of the coastline into three stages:the slow accretion stage(1974–1986),the moderate accretion stage(1987–2002),and the rapid accretion stage(2003–2014).Liner regression analysis illustrated that there is a significantly positive correlation between the area changes and sediment discharge in the Chongming Eastern Shoal and Jiuduansha.This suggested that sediment load has a fundamental effect on the evolution of the Changjiang Estuary.Construction of Deep Waterway in the North Passage of the Changjiang River(1998–2010) led to a rapid accretion in the Hengsha Eastern Shoal and Jiuduansha by influencing the hydrodynamics in North Passage.Coastal engineering such as reclamation and harbor construction can also change the morphology of the Changjiang Estuary.We defined a contribution rate of area change to assess the impact of reclamation on the evolution of Changjiang Estuary.It turned out that more than 45.3% of area increment of the Changjiang Estuary was attributed to reclamation. 展开更多
关键词 remote sensing coastline change sediment load coastal engineering Changjiang(Yangtze River) Estuary
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Numerical investigation of wave propagation in the Liverpool Bay,NW England
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作者 LI Ming RAYMOND Ip +2 位作者 WOLF Judith CHEN Xueen BURROWS Richard 《Acta Oceanologica Sinica》 SCIE CAS CSCD 2011年第5期1-13,共13页
The computer model for near shore wave propagation,SWAN,was used to study wave climates in Liverpool Bay,northwest England with various input parameters,including bottom friction factor,white capping,wind drag formula... The computer model for near shore wave propagation,SWAN,was used to study wave climates in Liverpool Bay,northwest England with various input parameters,including bottom friction factor,white capping,wind drag formulation and effects of tidal modulations.Results were compared with in-situ measurements and reveal the impacts from these inputs on the predictions of wave height and propagation distributions.In particular,the model results were found very sensitive to different input formulations,and tend to underestimate the wave parameters under storm conditions in comparison with the observations.It is therefore important to further validate the model against detailed field measurements,particularly under large storms that are often of the primary concern. 展开更多
关键词 coastal engineering FLOODING wave model near shore TIDE
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Optimal Port Design Minimizing Standing Waves with A Posteriori Long Term Shoreline Sustainability Analysis
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作者 Megan COOK Frédéric BOUCHETTE +2 位作者 Bijan MOHAMMADI Léa SPRUNCK Nicolas FRAYSSE 《China Ocean Engineering》 SCIE EI CSCD 2021年第6期802-813,共12页
Optimization theory is applied to a coastal engineering problem that is the design of a port.This approach was applied to the redesign of La Turballe Port in order to increase the exploitable surface area and simultan... Optimization theory is applied to a coastal engineering problem that is the design of a port.This approach was applied to the redesign of La Turballe Port in order to increase the exploitable surface area and simultaneously reduce the occurrence of long waves within the port.Having defined the cost function as a weighted function of wave amplitude and with the chosen parameterization of the port,results show that an extended jetty and a widened mole yield a unique optimal solution.This work demonstrates that numerical optimization may be quick and efficient in the identification of port solutions consistent with classic engineering even in the context of complex problems. 展开更多
关键词 optimization coastal engineering harbour design HYDRODYNAMICS shoreline analysis
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PREDICTION OF OCEANIC DATA
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作者 Fan, Yuchen 《China Ocean Engineering》 SCIE EI 1989年第3期353-364,共12页
The Kalman filter is used to predict the velocity of littoral current, the wave direction, the sea depth and the wave steepness. In this paper the Kazumasa model has been modified to deal with two cases: 1) For the po... The Kalman filter is used to predict the velocity of littoral current, the wave direction, the sea depth and the wave steepness. In this paper the Kazumasa model has been modified to deal with two cases: 1) For the positions a bit far from the shore, the interaction between the velocity of littoral current as well as the wave direction and the sea depth as well as the wave steepness must be considered. 2) For the positions very close to the shore, three new parameters describing the asymmetry wave are introduced to deal with wave breaking. The results from the modified model are compared with observed data, and the comparison indicates that the modified model is better and capable of giving more accurate results. 展开更多
关键词 coastal engineering Flow of Water Mathematical Models HYDRODYNAMICS Mathematical Models Signal Filtering and Prediction Kalman Filtering Water Waves
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Effect of Wave Groups on Wave Run-up
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作者 Zhou Jiabao and Zhang Jiachang Senior Engineer, River and Harbour Department, Nanjing Hydraulic Research Institute, Nanjing 《China Ocean Engineering》 SCIE EI 1992年第1期79-86,共8页
-The effect of wave group on wave run-up on a slope dike is mainly discussed in this paper. Two simulating methods of wave group and their applications in laboratory are introduced. Synthesizing the research results o... -The effect of wave group on wave run-up on a slope dike is mainly discussed in this paper. Two simulating methods of wave group and their applications in laboratory are introduced. Synthesizing the research results of wave run-up on a slope dike, the effect of wave group on wave run-up on a slope dike in coastal protection engineering is studied as the main point. 展开更多
关键词 wave group RUN-UP slope dike coastal protection engineering
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Extreme wave loads on submerged water intakes in shallow water 被引量:1
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作者 CORNETT Andrew HECIMOVICH Mark NISTOR Ioan 《Journal of Hydrodynamics》 SCIE EI CSCD 2015年第1期38-51,共14页
This paper provides new guidance concerning the hydrodynamic loads on submerged intake structures located in shallow water under breaking and non-breaking waves. Results from a series of experiments conducted in a lar... This paper provides new guidance concerning the hydrodynamic loads on submerged intake structures located in shallow water under breaking and non-breaking waves. Results from a series of experiments conducted in a large wave flume at 1 : 15 scale to study the hydrodynamic forces exerted on a generic intake structure located on a sloping seabed in shallow water below breaking and non-breaking irregular waves are presented. Based on analysis of the experimental data, empirical relationships are developed to describe the peak loads in terms of characteristic wave parameters such as significant wave height and peak wave period. The distribution of the peak loads across different parts of the intake structure is also described. Drag and inertia force coefficients for the horizontal forcing on the intake structure and for the main structural sub-components are derived and presented. It is shown that the well-known Morison equation, with appropriate drag and inertia force coefficients, can provide reasonable estimates of the moderate horizontal loads, but the peak loads are less well predicted. 展开更多
关键词 wave force water intake drag force inertia force coastal engineering
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