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The circular flow Tunnel of study of the hydraulic transient problems

Author: TianJianMing
Tutor: GaoShuangJu
School: Zhengzhou University
Course: Water Resources and Hydropower Engineering
Keywords: Circular flow Tunnel Higher order shallow water theory Solitary wave Numerical calculation
CLC: TV135
Type: Master's thesis
Year: 2009
Downloads: 10
Quote: 0
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Abstract


Circular flow Tunnel force conditions , to facilitate mechanized construction , hydraulic conditions , and many other advantages , widely used in water conservancy and hydropower project . Most of the engineering design is calculated at constant flow theory , but inevitably occur due to control and accident unsteady flow , which may cause potential accidents . Therefore conveying water through the hole circular Ming flow hydraulic transient problems , proposed scientific programs to solve these practical problems in water delivery project is a very significant issue . In this thesis study will include the following aspects : (1) the derivation of the shallow water theory based on higher order shallow water theory , starting from the Reynolds equation , the circular flow Tunnel of hydraulic transient problem by the preliminary simplified equations , along the width direction integral , integral in the z direction , equations dimensionless other steps of the three - dimensional flow equations into a one-dimensional flow equations along the x direction , resulting in a circular flow Tunnel high - end shallow water theory equations . Order shallow water theory can be regarded as a special case of the high-end shallow water theory . ( 2) numerical methods cited several commonly used numerical methods , these methods are the basis of the numerical calculation of hydraulics used in this paper is a direct difference method . In actual operation , the differential equation derivation of the equations of shallow water theory is more complicated , especially in the processing of the higher-order terms in the equation is particularly difficult , the paper uses software Mathemaitca to auxiliary complex mathematical calculation . ( 3 ) isolated spread dissemination In this paper, we consider a uniform flow of the incoming solitary wave superimposed unsteady flow problems caused hydraulic factors of hydraulic calculation , based on the initial and boundary conditions of the round hole work , the use of high-end shallow water theory the equations obtained the cave water flow velocity, flow , its water depth and other factors , to analyze the results , and to provide a reference for the safe operation of the round hole of water conveyance project . (4) The program design using symbolic computation software Mathematica programming to achieve the numerical solution of the equations of the theory of high-level shallow .

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CLC: > Industrial Technology > Hydraulic Engineering > The basic science of water resources project > Hydraulics > Engineering hydraulics ( hydraulic construction hydraulics )
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