徐六泾控制节点污染物运移轨迹模拟

吴德安; 严以新; 谢锐

徐六泾控制节点污染物运移轨迹模拟

1.
河海大学,水文水资源与水利工程科学国家重点实验室,江苏,南京,210098
2.
河海大学,水文水资源与水利工程科学国家重点实验室,江苏,南京,210098;河海大学,交通与海洋学院,江苏,南京,210098

基金项目: 水利部公益性行业科研专项资助项目(200701026);河海大学引进人才启动基金资助项目(2084/40801107)

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出版历程
- 收稿日期: 2008-07-15
- 修回日期: 2009-01-25

Numerical simulation on pollutant tracking released from the Xuliujing node transect

1.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China
2.
State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;College of Traffic and of Ocean, Hohai University, Nanjing 210098, China

摘要

摘要: 对三维多功能动力-生态耦合模式(COHERENS)进行二次开发,运用"网格冻结法"实现了漫滩和露滩过程中的干湿交替,突破其为固定边界和限制水深的局限,使COHERENS模式成功应用于长江口浅滩过程的模拟。对潮位和水流流速的模拟结果进行了较好地验证。在斜压流场的基础上对示踪颗粒拉格朗日运移进行追踪,对污染物欧拉输运进行数值模拟。以徐六泾控制节点横断面设置颗粒示踪子和污染物排放点,对排放的悬浮颗粒物质和溶解性污染物的运动轨迹和特征进行了模拟和比较分析,给出了模拟期间的流场特征和污染物输移规律。
- 三维多功能动力-生态耦合模式 /
- 长江口 /
- 徐六泾 /
- 动边界 /
- 拉格朗日输运 /
- 欧拉输运 /
- 踪迹
Abstract: A coupled hydrodynamic-ecological(COH ERENS) model,with anorthogonal horizontal coordinates and a σ-vertical coordinate,was combined with a 3-D Lagrangian drifter tracking module and a water quality module to construct the hydrodynamic part of the modeling system.The COHERENS model was used to study water exchange and pollutant transport in the Changjiang Estuary.The particle tracking method,as applied in the sing lerelease experiments,provides a picture of the residual flow in the certain parts of the Changjiang Estuary.The COHERENS model had been modified by means of the changing grid technology and the dry-wet method to deal with the moving boundary.The model was calibrated and validated using tidal data available for represent ativestations.Both the magnitude and phase of the water elevation and velocity were reasonably reproduced.The numerical simulation was performed of the tidal current and pollutant diffusion from the Xuliu River node transect in the Changjiang Estuary to reveal suspended particle matter and dissolved pollutant transport in this area.By calculation of the track of Lagrange particle(or particles mass centre) and Eulerian dissolved contaminant mass centre realsed from the Xuliu River node transect,the effects of current fields on the pollutant transport and diffusion were analyzed. The current field characteristics and the pollutant transport rule were discovered.
- COHERENS model /
- Changjiang Estuary /
- Xuliujing /
- moving boundary /
- Lagrangian transport /
- Euleriant ransport /
- tracer

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参考文献(17)

程江,何青,夏小明.长江口徐六泾悬浮细颗粒泥沙絮凝体特性[J].海洋与湖沼,2007,38(4):304-313.

RIDDERINKHOF H,ZIMMERMAN J T F.Chaotic stirring in a tidal system[J].Science,1992,258:1107-1111.

ALLEN C M.Numerical simulation of contaminant dispersion in estuary flows[J].Proceedings of the Royal Society of London(A),1982,381:179-194.

PROCTOR R,FLATHER R A,ELLIOTT A J.Modelling tides and surface drift in the Arabian Gulf-application to the gulf oil spill[J].Continental Shelf Research,1994(14):531-545.

ELLIOTT A J.Shear diffusion and the spread of oil in the surface layers of the North Sea[J].Deutsche Hydrographische Zeitschrift,1986,39:113-137.

郝琰.长江口附近海域环流及大黄鱼鱼卵、仔鱼输运和扩散的数值模拟[D].青岛:中国科学院海洋研究所,2000.

PULS W,S UNDERMANN J.Modelling the distribution of suspended matter and of lead in the North Sea[M].//Mehta A J,ed.Nearshore and Estuarine Cohesive Sediment Transport.Washington D C:American Geophysical Union,1993:520-540.

管卫兵,王丽娅,潘建明,等.POM模式在河口湾污染物质输运过程模拟中的应用[J].海洋学报,2002,24(3):9-17.

LUYTEN P J,JONES J E,PROCTOR R,et al.COHERENS-A coupled hydrodynamical-ecological model for regional and shelf seas:user documentation[R].MUMM Report,Management Unit of the Mathematical Models of the North Sea.1999,914.

LIE-YAUW Oey.A wetting and drying scheme for POM[J].Ocean Modelling,2005,9:133-150.

BATES P D.Development and testing of a sub-grid model for moving-boundary hydrodynamic problems in shallow water[J].Hydrological Processes,2000(14):2073-2088,

MELLOR G L,YAMADA T.Devolopment of a turbulence closure model for geophysical fluid problems[J].Rev Geophys Space Phys,1982(20):851-875.

SMAGORINSKY J.General circulation experiments with the primitive equations-I.The basic experiment[J].Mon Weather Rev,1963,91:99-165.

BLUMBERG A F,MELLOR G L.A description of a three-dimensional coastal ocean circulation model[M]//HEAPS N S.Three-dimensional Coastal Ocean Models.Coastal and Estuarine Sciences,v4.Washington D C:American Geophysical Union,1987:1-16.

于东生.基于ADCP的长江口水沙运动分析及三维水流数学模型[D].南京:河海大学,2004.

刘成,何耘,李行伟,等.上海市污水排放u污染物运动轨迹模拟[J].水利学报,2003(4):114-118.

龚政,张长宽,金勇,等.长江口斜压诊断模式三维流场数值模拟[J].水科学进展,2004,15(3),300-306.

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