风场、地形和吞吐流对太湖流场影响的研究  

Study on influences of wind field,topography and inflow / outflow on flow in lake Tai

作　　者：姜恒志[1,2] 崔雷[1,2] 石峰[2] 刘思国[3] 刘志华[1] 

机构地区：[1]国家海洋环境监测中心国家海洋局近岸海域生态环境重点实验室,辽宁大连116023 [2]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023 [3]中交天津港湾工程研究院有限公司,天津300222

出　　处：《水力发电学报》2013年第6期165-171,共7页Journal of Hydroelectric Engineering

基　　金：国家重点基础研究发展计划项目(2013CB430403);国家自然科学基金项目(51279023)

摘　　要：采用EFDC模型对实测风场和吞吐流作用下的太湖流场进行了数值模拟,水位模拟结果与实测值符合较好,结果表明该模型可以适用于太湖流场的数值模拟。在此基础上详细分析了不同风场,地形及吞吐流条件对太湖水动力特性的影响。比较各种方案的流场可知,风对太湖流场结构起主导作用,风场是影响湖流的最敏感的因素;湖底地形的变化对各层风生流场有一定的影响;吞吐流对整个湖泊水流结构影响微弱,对湖泊出入口局部水域水流流态有一定影响;在静风条件下,湖泊水流主要由吞吐流驱动,吞吐流对出入口局部水域水流流态有较大影响。The wind-driven flows in Lake Tai were numerically simulated using the EFDC model and the calculations agree with the observed data of water level. This shows that the model is applicable to this study. We analyzed the influences of wind field, topography and inflow/outflow on the flow characteristics Qf this lake. The wind plays a vital role in determination of the flow structure and it is the most sensitive factor. The influence of lake topography is significant while inflow and outflow have little effect. In the windless condition, however, the lake flow is primarily driven by the inflow and outflow that are major factors to the flow patterns in the vicinities of lake inlet and outlet.

关 键 词：环境水力学 水动力特性 EFDC 风场 地形 吞吐流 

分 类 号：X143[环境科学与工程—环境科学]