Fluid Transient Process For The Planyan River Delivery Water System Of Guizhou Yaxi Power Station

The severe damage will be caused by the water hammer happening on a long distance delivery water system. To avoid the damage, some equipment usually will be set up. It is introduced in the thesis to the fluid transient process in compressive pipeline and the cardinal equations for the fluid transient process. The equations are a pair of non-linear hyperbola partial differential. The length of the pipeline and the time are independent variables, and the flow rate and the water pressure are followed variables. So the equations have not close result. The author tries to solve the equation by the characteristic method in this thesis. Based on the high speed, the high precision and the big capacity of the computer, we can optimize and numerical simulate the long distance delivery water system. So, some problems that only be qualitatively analysed before can be quantitatively analysed by computer. The numerical algorithm and computational procedures are presented in the thesis. It is studied in the thesis on the principle , the usage conditions, the computational methods of the air valve, general surge tank, the air surge tank, one-way surge tank and the boundary conditions. As to the Pianyan river delivery water system for the Yaxi firepower station in Guizhou, five schemes such as one main delivery pipeline equipped with the air valve plus air surge tank scheme, the one main delivery pipeline stepped through two pump stations scheme, the one main pipeline equipped with one-way surge tank scheme, the two branch pipelines scheme, and the two branch pipelines equipped with one-way surge tank scheme are studied . After author's analyzing and comparing the numerical simulating results of all the schemes,the two...