摘要
基于三维水动力数学模型,以香溪河河口处支流库湾与长江干流为研究对象,分析了该区域在常年盛行风况下,稳定的风生流流场三维结构特征。结果表明,在风速3m/s的NNE风持续作用下,流场达到稳定状态后,总体上水平方向的流速得到了不同程度的提升;香溪河支流库湾内表层、中层水体流向与风向一致,底层流向与风向大致相反,呈补偿态势;而长江干流流向受风力影响相对较小,变化趋势微弱。
Based on the three-dimensional hydrodynamic mathematical model,taking the estuary of Xiangxi River and the main stream of the Yangtse River as research object,three-dimensional structural characteristics of steady wind-driven current field were analyzed under prevailing wind condition.The simulation results show that when the flow field is on the steady state,the horizontal velocity generally increases in various degrees by 3m/s continuous NNE wind.The flow directions of surface and middle layer are in consistent with wind direction while the bottom layer flow directions are opposite to it with a compensation current character.However,the flow directions of the main stream of the Yangtse River are less affected by wind and the change trend is small.
出处
《水电能源科学》
北大核心
2016年第10期65-68,216,共5页
Water Resources and Power
关键词
香溪河库湾
风生流
三维水动力模型
数值模拟
Xiangxi river reservoir bay
wind-driven current
three-dimensional hydrodynamic model
numerical simulation
