风场对石臼湖流场及水质影响的研究  

Study on the Influence of Wind Field on Flow Field and Water Quality of Shijiu Lake

作　　者：罗佳鑫 逢勇[1,2] 马秋霞 罗缙[1,2] LUO Jja-xin;PANG Yong;MA Qiu-xia;LUO Jin(College of Environment,Hohai University,Nanjing 210098,China;Key Laboratory of Integrated Regulation and Resource Development on Shallow Lake of Ministry of Education,Hohai University,Nanjing 210098,China)

机构地区：[1]河海大学环境学院,江苏南京210098 [2]河海大学浅水湖泊综合治理与资源开发教育部重点实验室,江苏南京210098

出　　处：《环境科技》2024年第3期7-11,共5页Environmental Science and Technology

基　　金：国家自然科学基金资助项目(51879070)。

摘　　要：为研究风场对石臼湖流场及水质的影响规律,基于MIKE21构建二维水动力-水质模型,并利用一维稳态模型提供水质边界条件,模拟不同风况下石臼湖流场特征及污染物输移扩散规律。结果表明,石臼湖对风场变化较为敏感,不同风况石臼湖会产生形状、大小不同的风生环流,且风场也会影响流场流速的分布规律;风向是影响石臼湖污染物输移扩散的重要因素,当风向为东南风时,石臼湖污染物输移扩散的程度最高,而风向为东风时,污染物输移扩散程度最低;风向不变时,风速也会影响污染物输移扩散程度。In order to study the influence of wind field on the flow field and water quality of Shiju Lake,a twodimensional hydrodynamic-water quality model was constructed based on MIKE21,and the one-dimensional steady-state model was used to provide water quality boundary conditions to simulate the characteristics of the flow field and the transport and diffusion law of pollutants in Shijiu Lake under different wind conditions.The results show that Shijiu Lake is sensitive to changes in the wind field,and different wind conditions will produce aeolian circulation in Shijiu Lake with different shapes and sizes,and the wind field will also affect the distribution of flow velocity.Wind direction is an important factor affecting the transport and diffusion of pollutants in Shijiu Lake,and when the wind direction is southeasterly,the degree of pollutant transport and diffusion in Shijiu Lake is the highest,and when the wind direction is easterly,the degree of pollutant transport and diffusion is the lowest.When the wind direction is constant,the wind speed will also affect the degree of pollutant transport and diffusion.

关 键 词：风生流 石臼湖 MIKE21 污染物 输移扩散 

分 类 号：X8[环境科学与工程—环境工程]