FORECAST OF WATER TEMPERATURE IN RESERVOIR BASED ON ANALYTICAL SOLUTION  

作　　者：JI Shun-wen ZHU Yue-ming QIANG Sheng ZENG Deng-feng 

机构地区：[1]College of Water Conservancy and Hydroelectric Engineering, Hohai University, Nanjing 210098, China [2]Water Power Plant of Sanhe Shangyoujiang, Ganzhou 341212, China

出　　处：《Journal of Hydrodynamics》2008年第4期507-513,共7页水动力学研究与进展B辑（英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos. 50539010, 50539020, and 50579080)

摘　　要：The water temperature in reservoirs is difficult to be predicted by numerical simulations. In this article, a statistical model of forecasting the water temperature was proposed. In this model, the 3-D thermal conduction-diffusion equations were converted into a system consisting of 2-D equations with the Fourier expansion and some hypotheses. Then the statistical model of forecasting the water temperature was developed based on the analytical solution to the 2-D thermal equations. The~ simplified statistical model can elucidate the main physical mechanism of the temperature variation much more clearly than the numerical simulation with the Navier-Stokes equations. Finally, with the presented statistical model, the distribution of water temperature in the Shangyoujiang reservoir was determined.The water temperature in reservoirs is difficult to be predicted by numerical simulations. In this article, a statistical model of forecasting the water temperature was proposed. In this model, the 3-D thermal conduction-diffusion equations were converted into a system consisting of 2-D equations with the Fourier expansion and some hypotheses. Then the statistical model of forecasting the water temperature was developed based on the analytical solution to the 2-D thermal equations. The~ simplified statistical model can elucidate the main physical mechanism of the temperature variation much more clearly than the numerical simulation with the Navier-Stokes equations. Finally, with the presented statistical model, the distribution of water temperature in the Shangyoujiang reservoir was determined.

关 键 词：water temperature quasi 3-D statistical model thermal conduction-diffusion equation analytical solution regression analysis factor of radiation 

分 类 号：O55[理学—热学与物质分子运动论]