The Flowing Characteristics In Qingcaosha Reservoir

Qingcaosha reservoir is a strategic project to solve the fresh water lack during the development of society and economic of Shanghai. After finishing the construction of the reservoir, what we care most is how to carry out an effective scheme to pump in and out water in order to make sure the reservoir operate normally and be taken greatest advantage of.The numerical model is built with the commercial software Delft-3D, which is then validated with the analysis solution and the measured data. Typical wind-induced flow pattern is studied so as to recognize the basic flowing characteristics in the reservoir. The flow pattern is also calculated in the conditions of different wind modes and schemes of drawing and draining off water. The process that how water quality changes under these suppositional schemes is calculated. According to the defined"rate of water exchange", the efficiency of water exchange is analyzed in order to establish an efficient and sound scheme. The research about the hydraulic process and the water quality changing process will provide a scientific foundation to set the discharge at the strobes and the grade of purifying the water. The content of this paper includes building and validating the numerical model, and studying the current characteristics in the reservoir under different condition and the process of water exchange.