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《Resources and Environment in the Yangtze Basin》 2010-07
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ON TEMPERATURE NUMERICAL PREDICTION IN AHAI RESERVOIR

REN Hua-tang,XIA Jian-xin,TAO Ya (Department of Environment Science,Central University for Nationalities,Beijing 100081,China)  
Ahai Hydropower Station is one of hydropower stations in the middle Jinshajiang River.Ahai Reservoir is very deep and inclined to form temperature stratification,which will change the water temperature significantly and bring disadvantage to the water environment.The temperature distribution of Ahai Reservoir in dry year was predicted by a 3D numerical model,which was verified through stratified current experimental data.The result shows:(1)the head area is in weak stratification state in winter and spring because of the low temperature of upstream flow.The maximal vertical temperature difference is 4.59℃ in April.(2)the temperature process of released water is lagged behind the natural process.The temperature will be lower between Feb.and Mar.but it will be higher between Sep.and Jan.the next year.(3)The minimal water temperature is increased after the reservoir stores water.The differences are 2.30 and 2.09℃ in Nov.and Dec.respectively.
【Fund】: 国家自然科学基金项目(50909108);; 北京高等学校化学实验教学示范中心建设项目(2008);; 中央民族大学本科专业建设项目(2008);中央民族大学教学改革项目(2008)
【CateGory Index】: TV697.21
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