THREEDIMENSIONAL NUMERICAL SIMULATION OF WINDINDUCED CIRCULATION IN LAKE TAIHU

作     者：LUOLian-cong QINBo-qiang LUO LiancongNanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, ChinaGraduate School of the Chinese Academy of Sciences, Beijing 100039, ChinaQIN BoqiangNanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China

作者机构：NanjingInstituteofGeographyandLimnologyChineseAcademyofSciencesNanjing210008China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2004年第16卷第3期

页      面：341-349页

核心收录：

学科分类：080103[工学-流体力学] 08[工学] 080104[工学-工程力学] 081502[工学-水力学及河流动力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina (GrantNos :4 0 0 710 19 4 0 2 0 30 0 7)andChineseA cademyofSciences (GrantNo:KZCX1 SW 12 ) 

主　　题：numerical simulation three dimensional hydrodynamics lake taihu 

摘      要：A three-dimensional (3-D) numerical circulation model for shallow-lake ispresented and described in detail in this paper, which employs model-splitting technique in order tocalculate water level, mean-depth velocities and horizontal and vertical velocities at differentdepth simultaneously. The results show the current circulation pattern features four eddies with twoclockwise and two anticlockwise induced by prevailing wind. Opposite wind field will lead toopposite current pattern with phase shifted by 180° The surface convergence zone is located in theupwind area and the surface divergence part in the downwind region, This results in drastic verticalmovement in the two zones and the return currents at the bottom with phase shifted by 180° fromthe surface current vectors. Thus the water level decreases significantly at the leeward side andincreases quickly at the windward part. Verification and calibration for the model were made basedon the water-level and current data observed during the 9711 Storm in Lake Taihu. The predictedresults are in satisfactory agreement with the observed data, which raises the possibility that thismodel can be used to decide the bottom current stress for sediment resuspension and also tosimulate sediment transportation. It can provide a fundamental tool to study the nutrient releasefrom bottom sediment in Lake Taihu.