长江水系武汉段水动力过程三维数值模拟  

Three-dimensional modeling of hydrodynamic processes in the Wuhan catchments of the Chang Jiang River

作　　者：齐珺[1] 杨志峰[1] 熊明 沈珍瑶[1] 牛军峰[1] 

机构地区：[1]北京师范大学环境学院水环境模拟国家重点实验室,北京100875 [2]长江水利委员会水文局,湖北武汉430010

出　　处：《水动力学研究与进展（A辑）》2008年第2期212-219,共8页Chinese Journal of Hydrodynamics

基　　金：国家重点基础研究发展规划(973)项目(2003CB415204)

摘　　要：为了考察长江水系武汉段河床的冲淤变化,基于EFDC(Environmental Fluid Dynamic Code)建立了河道三维水动力学模型,并利用2004年6月到9月的实测水位数据对模型进行了校准和验证。在此基础上,对2004年6月至9月洪水期间武汉段进行了模拟,发现天兴洲右岸天兴洲大桥上游1.75公里处河床冲刷最大;而天兴洲左岸前端的河床淤积最大。此外,汉江河口断面的流速矢量分析表明,河口处对长江右岸的冲刷大于左岸,武昌深槽内的冲刷比较剧烈。A three-dimensional fluid hydrodynamic model of Wuhan catchments of the Chang Jiang River was developed using EFDC （Environmental Fluid Dynamic Code） in order to study the changing of river bed. In addition, the model was calibrated and validated by the measured datum from June to September 2004. Based on the model, The flood happened from June 2004 to September 2004 was simulated, and the water level, flow field and bottom shear stress of the catchments were obtained. The results indicated that the maximum erosion and deposition appeared at the 1.75 kilometers upstream the Tian Xingzhou bridge of Tiara Xingzhou right bank and the front end of the Tian Xingzhou left bank respectively, when the flood peak passed the catchments at July-26-2004. Furthermore, according to velocity analysis of Han Jiang estuary section, the erosion of right bank of Chang Jiang was stronger than that of left bank and the erosion in Wu Chang Deep Pool was strong too.

关 键 词：EFDC 长江水系武汉段 水动力模型 流场 

分 类 号：X192[环境科学与工程—环境科学]