|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Modeling of suspended sediment transport with wave-induced longshore current in Huanghe (Yellow) River Delta显示文摘A three-dimensional suspended sediment model (SED) developed by the present authors is coupled with the combinatorial model of COHERENS (Luyten et al., 1999) (the three-dimensional coupled hydrodynamical-ecological model for Regional and Shelf Seas) and SWAN (Holthuijsen et al., 2004) (the third generation wave model). SWAN is regarded as a subroutine of COHERENS and gets time- and space-varying current velocity and surface elevation from COHERENS. COHERENS gets time- and space- varying wave relevant parameters provided by SWAN. Effects of wave on current are applied in bottom shear stress, wave-induced depth-dependent radiation stress and surface drag coeffcient calculation. At the same time, the damping function of suspended sediment on turbulence is introduced into COHERENS. So the sediment model SED has feedback on circulation model COHERENS. The SED obtains current associated parameters from COHERENS. Then a coupled hydrodynamic-sediment model COHERENS-SED being able to account for interaction between wave and current is obtained. COHERENS-SED is adopted to simulate three-dimensional suspended sediment transport in the Huanghe River delta. In terms of simulation results, there is obvious difference between top and bottom layer of wave-induced longshore current. The val- ues of time series of sediment concentration gotten by COHERENS-SED have, generally, an ac- cepted agreement extent with measurement. Significant wave heights and wave periods obtained by COHERENS-SED show that wave simulation case with current s effect can give better agreement extent with measurement than case without current s effect. In the meantime, suspended sediment concentration distributing rule obtained by COHERENS-SED is similar to former researches and measurement. | LI Changliang LIANG Bingchen ZHANG Jing | 2009 | Acta Oceanologica Sinica2009，28，3： | 4 |
| 2 | Numerical study of three-dimensional wave-induced longshore current's effects on sediment spreading of the Huanghe River mouth显示文摘A three-dimensional wave radiation stress is introduced into the hydrodynamic sediment coupled model COHERENS-SED,which has been developed through introducing wave-enhanced bottom shear stress,wave dependent surface drag coefficient,wave-induced surface mixing,SWAN,damping function of sediment on turbulence,sediment model and depth-dependent wave radiation stress to COHERENS.The COHERENS-SED is adopted to study the effects induced by wave-induced three-dimensional longshore current on suspended sediment spreading of the Huanghe River (Yellow River) mouth.Several different cases divided by setting different wave parameters of inputting boundary waves are carried out.The modeling results agree with measurement data.In terms of simulation results,it is easy to know that three-dimensional wave radiation stress plays an obvious role when inputting boundary wave height is stronger than 3 m.Moreover,wave direction also affects the sediment spreading rules of the mouth strongly too. | LIANG Bingchen ZHAO Hongping LI Huajun WU Guoxiang | 2012 | Acta Oceanologica Sinica2012，31，2： | 4 |
| 3 | Analysis of Oblique Wave Interaction with a Comb-Type Caisson Breakwater显示文摘This study develops an analytical solution for oblique wave interaction with a comb-type caisson breakwater based on linear potential theory. The fluid domain is divided into inner and outer regions according to the geometrical shape of breakwater. By using periodic boundary condition and separation of variables, series solutions of velocity potentials in inner and outer regions are developed. Unknown expansion coefficients in series solutions are determined by matching velocity and pressure of continuous conditions on the interface between two regions. Then, hydrodynamic quantities involving reflection coefficients and wave forces acting on breakwater are estimated. Analytical solution is validated by a multi-domain boundary element method solution for the present problem. Diffusion reflection due to periodic variations in breakwater shape and corresponding surface elevations around the breakwater are analyzed. Numerical examples are also presented to examine effects of caisson parameters on total wave forces acting on caissons and total wave forces acting on side plates. Compared with a traditional vertical wall breakwater, the wave force acting on a suitably designed comb-type caisson breakwater can be significantly reduced. This study can give a better understanding of the hydrodynamic performance of comb-type caisson breakwaters. | WANG Xinyu LIU Yong LIANG Bingchen | 2018 | Journal of Ocean University of China2018，17，2： | 3 |
| 4 | Numerical study of three-dimensional suspended sediment transport in waves and currents 显示文摘 | Liang Bingchen Li Huajun | 2007 | Ocean Engineering2007，34，1112： | 1 |
| 5 | Numerical study of three-dimensional suspended sediment transport in waves and currents显示文摘 | Bingchen Liang Huajun Li Dongyong Lee | 2007 | Ocean Engineering2007，，11： | 1 |
| 6 | Numerical Modeling of Local Scour Around Hydraulic Structure in Sandy Beds by Dynamic Mesh Method显示文摘Local scour, a non-negligible factor in hydraulic engineering, endangers the safety of hydraulic structures. In this work, a numerical model for simulating local scour was constructed, based on the open source code computational fluid dynamics model Open FOAM. We consider both the bedload and suspended load sediment transport in the scour model and adopt the dynamic mesh method to simulate the evolution of the bed elevation. We use the finite area method to project data between the three-dimensional flow model and the two-dimensional(2D) scour model. We also improved the 2D sand slide method and added it to the scour model to correct the bed bathymetry when the bed slope angle exceeds the angle of repose. Moreover, to validate our scour model, we conducted and compared the results of three experiments with those of the developed model. The validation results show that our developed model can reliably simulate local scour. | FAN Fei LIANG Bingchen BAI Yuchuan ZHU Zhixia ZHU Yanjun | 2017 | Journal of Ocean University of China2017，16，5： | 0 |
| 7 | Diffusion Characteristics of Swells in the North Indian Ocean显示文摘Research on the diffusion characteristics of swells contributes positively to wave energy forecasting, swell monitoring, and early warning. In this work, the South Indian Ocean westerly index(SIWI) and Indian Ocean swell diffusion effect index(IOSDEI) are defined on the basis of the 45-year(September 1957–August 2002) ERA-40 wave reanalysis data from the European Centre for Medium-Range Weather Forecasts(ECMWF) to analyze the impact of the South Indian Ocean westerlies on the propagation of swell acreage. The following results were obtained: 1) The South Indian Ocean swell mainly propagates from southwest to northeast. The swell also spreads to the Arabian Sea upon reaching low-latitude waters. The 2.0-meter contour of the swell can reach northward to Sri Lankan waters. 2) The size of the IOSDEI is determined by the SIWI strength. The IOSDEI requires approximately 2–3.5 days to fully respond to the SIWI. The correlations between SIWI and IOSDEI show obvious seasonal differences, with the highest correlations found in December–January–February(DJF) and the lowest correlations observed in June–July–August(JJA). 3) The SIWI and IOSDEI have a common period of approximately 1 week in JJA and DJF. The SIWI leads by approximately 2–3 days in this common period. | ZHENG Chongwei LIANG Bingchen CHEN Xuan WU Guoxiang SUN Xiaofang YAO Jinglong | 2020 | Journal of Ocean University of China2020，19，3： | 0 |
| 8 | Demands and challenges for construction of marine infrastructures in China显示文摘The oceans are crucial to human civilization.They provide core support for exploitation and utilization of marine space,resources,and energy.Thus,marine infrastructures are vital to a nation’s economic sustainable development.To this end,this article first describes the main challenges in current ocean utilization,and then reviews the China’s ocean engineering progress.As such,six major sectors are evaluated:1)global climate change and marine environment,2)comprehensive utilization of marine space,3)marine transportation infrastructure interconnection,4)ocean clean energy development and maricultural facilities,5)ecological crisis and marine engineering countermeasures,and 6)marine infrastructure operation safety and maintenance.Finally,perspectives on future directions of ocean utilization and marine infrastructure construction in China are provided. | Huajun LI Yong LIU Bingchen LIANG Fushun LIU Guoxiang WU Junfeng DU Huimin HOU Aijun LI Luming SHI | 2022 | Frontiers of Structural and Civil Engineering2022，16，5： | 0 |
| 9 | Experimental Study of Submergence Ratio on Local Scour Around a Square Pile in Steady Flow显示文摘Scour around a submerged square pile was realized experimentally in a steady flow to study the effects of flow depth on local scour.Flow depth to pile height ratios ranging from 1.5 to 5 in uniform sand and 2 to 5 in non-uniform sand were tested in the approaching flow velocity to critical velocity(larger than which the sediment particle is motivated)ratios of 0.56 and 1.03,respectively.The influences of flow depth were investigated on the basis of analysis of the three-dimensional topography,temporal maximum scour depth,bed profile development,and equilibrium scour depth.Results showed that the maximum scour depth was at the upstream corners of the pile other than at the stagnation point.The evolutions of the maximum scour depth data in non-uniform sand were well fitted with a recent exponential function,which characterized the initial,developing,and equilibrium stages of scour depth.The scour hole slopes upstream of the pile were found to be parallel to each other in the process of each test and were mainly governed by the sediment repose underwater.The equilibrium scour depth varied slightly with flow depth when the submergence ratio was larger than 1 in uniform sand while it was 2 in non-uniform sand.The armoring effects of coarse sediment particles markedly reduced the sediment transport in non-uniform sand despite the 0.34 increment in non-uniformity. | DU Shengtao WU Guoxiang LIANG Bingchen ZHU David Z WANG Risheng | 2023 | Journal of Ocean University of China2023，22，5： | 0 |
| 10 | Experimental Study of Dissolved Oxygen Transport by Regular Waves Through a Perforated Breakwater显示文摘The perforated breakwater is an environmentally friendly coastal structure,and dissolved oxygen concentration levels are an important index to denote water quality.In this paper,oxygen transport experiments with regular waves through a vertical perforated breakwater were conducted.The oxygen scavenger method was used to reduce the dissolved oxygen concentration of inner water body with the chemicals Na_2SO_3 and Co Cl_2.The dissolved oxygen concentration and wave parameters of 36 experimental scenarios were measured with different perforated arrangements and wave conditions.It was found that the oxygen transfer coefficient through wave surface,K_1a_1,is much lower than the oxygen transport coefficient through the perforated breakwater,K_2a_2.If the effect of K_1a_1 is not considered,the dissolved oxygen concentration computation for inner water body will not be greatly affected.Considering the effect of a permeable area ratio α,relative location parameter of perforations δ and wave period T,the aforementioned data of 30 experimental scenarios,the dimensional analysis and the least squares method were used to derive an equation of K_2a_2(K_2a_2=0.0042α^(0.5)δ^(0.2)T^(-1)).It was validated with 6 other experimental scenarios data,which indicates an approximate agreement.Therefore,this equation can be used to compute the DO concentration caused by the water transport through perforated breakwater. | YIN Zegao YU Ning LIANG Bingchen ZENG Jixiong XIE Shaohua | 2016 | Journal of Ocean University of China2016，15，1： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员