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引用本文:胡维平,濮培民,秦伯强.太湖水动力学三维数值试验研究─1.风生流和风涌增减水的三维数值模拟.湖泊科学,1998,10(4):17-25. DOI:10.18307/1998.0403
Hu Wei-ping,Pu Pei-min,Qin Bo-qiang.A Three-Dimensional Numerical Simulation on the Dynamics in Taihu Lake, China (I):the Water Level and the Current during the 9711 Typhoon Process. J. Lake Sci.1998,10(4):17-25. DOI:10.18307/1998.0403
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太湖水动力学三维数值试验研究─1.风生流和风涌增减水的三维数值模拟
胡维平, 濮培民, 秦伯强
中国科学院南京地理与湖泊研究所, 南京 210008
摘要:
本文建立了太湖风生流和风涌增减水的-个三维数值模型.该模型可对垂直方向进行多层次划分,且各计算网格点层数-样,模拟计算了1997年8月的11三号台风对太湖水位和湖流作用.用环湖六个水位站水位过程资料对模型计算出的水位进行了验证,并用太湖梅梁湖湾口的实测流速资料对模型计算出流场进行了检验.结果表明模拟计算的水位过程与实测资料吻合-致,模型基本上反映了实际流场的结构,模型的结果还显示太湖风生流存在垂直切变,底层湖流为补偿流,中间为转换层.
关键词:  三线数值模拟  风生流  风涌水  太湖
DOI:10.18307/1998.0403
分类号:
基金项目:欧盟项目,CI1*-CT93-0004(DG12-HSMU);中国科学院“九五”重点项目,KZ952-S1-220
A Three-Dimensional Numerical Simulation on the Dynamics in Taihu Lake, China (I):the Water Level and the Current during the 9711 Typhoon Process
Hu Wei-ping, Pu Pei-min, Qin Bo-qiang
Nanjing Institute of Geography. Limnology, Chinese Academy of Sciences, Nanjing 210008
Abstract:
A three-dimensional modcl for simulating the dynamics of wind-driven lake current and water level in Taihu Lake was constructed. The water body can be divided into many layers in vertical direction. The fractions of layers arc the same for all the lake in the model. The dynamic processes of the currents and water level in Taihu Lake were simulated for 9 clays including the 9711 typhoon process in 18-20 Aug.,1997. The model was calibrated by the use of water level data of six hydrological stations surrounding the lake. The simulated lake currents were compared with the observed data of water current at the point in the mouth of Mciliang Bay. The simulation results on upwelling-downwclling of water level were coincidcd with the data observed at the six stations and the simulation results on lake current reflcctcd the main structure of observed data. The results of the model showed there were rapid changcs of current vcctors along vertical direction. The bottom lake currents are the compensation currents of the surfacc lake currents,which almost follow the wind direction.
Key words:  Three-dimensional numerical simulation  wind-clrivcn lake current  Taihu Lake
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