| 摘要: |
| 风场和吞吐流是浅水湖泊运动的主要驱动力，影响着湖区污染物的迁移转化。基于二维非结构网格，构建了乌梁素海水动力模型。通过对比定常风作用下湖流的方向、环流的分布及形式与无风条件下的区别，模拟不同算例吞吐流作用下湖区流速及环流结构的差异，探究了定常风和吞吐流对乌梁素海流场的影响。结果表明：乌梁素海在无风条件下出现大面积的滞流区；风场会增加湖流的流速，影响区域主要在西大滩区、东大滩区及湖区南部明水区，产生明显环流，风场是乌梁素海主要的驱动力；SSW与ENE向风场作用下，典型区域产生的环流位置、形态结构相近，方向相反；吞吐流量的增加会增大湖区整体流速，对湖区流场形态、结构影响较小；定常风条件下，吞吐流量的增加（一定范围）会导致环流强度减弱。研究结果为乌梁素海营养盐、污染物质输移规律研究奠定基础。 |
| 关键词: 乌梁素海 定常风 吞吐流 水动力模拟 |
| DOI：10.11693/hyhz20201000279 |
| 分类号:X143 |
| 基金项目:国家重点研发计划项目，2019YFC0409204号；内蒙古自治区科技计划项目，2020GG0208号；内蒙古自治区自然科学基金项目，2019BS05004号，2020MS02017号，2020LH02008号。 |
附件 |
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| THE INFLUENCES OF UNIFORM WIND AND THROUGHPUT FLOW ON THE FLOW FIELD OF WULIANGSU LAKE |
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WANG Zhi-Chao1, SHI Qing-Song1, LI Xing2, LI Wei-Ping1, YANG Wen-Huan1, YU Ling-Hong1
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1.School of Energy and Environment, Inner Mongolia University of Science & Technology, Baotou 014010, China;2.Inner Mongolia Water Saving Agricultural Engineering Research Center of Inner Mongolia Normal University, Huhehaote 010020, China
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| Abstract: |
| Wind field and throughput flow are the main driving forces of the shallow lake motion, which affect the migration and transformation of pollutants in the lake. In this study, a hydrodynamic model of the Wuliangsu Lake is constructed based on a two-dimensional unstructured grid. The effects of uniform wind and throughput flow on the flow field of the Wuliangsu Lake are investigated by comparing the direction, distribution and form of the lake flow under the effect of uniform wind with those under the condition of no wind, and simulating the differences of flow velocity and circulation structure in the lake area under the effect of throughput flow in different cases. The results show that the wind field increases the flow velocity of the lake, and the influence area is mainly in the west beach area, the east beach area and the bright water area in the south of the lake, producing obvious circulation, and the wind field is the main driving force of the Wuliangsu Lake; the location and morphological structure of the circulation produced in typical areas under the action of the wind field in SSW and ENE are similar, and the direction is opposite; the increase of the throughput flow will increase the overall flow velocity in the lake area, which has less influence on the flow field morphology and structure in the lake area; under the uniform wind conditions, the increase of throughput flow (in a certain range) will lead to the weakening of the circulation intensity. The results of the study lay the foundation for the study of nutrient and pollutant transport patterns in the Wuliangsu Lake. |
| Key words: Wuliangsu Lake uniform wind throughput flow hydrodynamic simulation |
