Application Of One-Dimensional Power Flow Mathematical Model In Water Intake Project

The simulation has been considerable development in the past decades.The trend of numerical tidal flow mathematical model of estuary has rapidly become a project can be accepted,its value and function and decreased physical model scale compared to the mathematical model,with less investment than the corresponding physical model,speed fast and the advantages of small occupied space.One dimensional mathematical model of tidal flow and the other numerical model of composite model has gradually been recommended as the effective method to solve large-scale estuarine engineering problems.The object of the one-dimensional mathematical model of tidal flow is studied in this paper,from the estuary side boundary constraints in a general and within the boundaries of the center line of the direction of movement.Also can be used in long and narrow bay or Strait,long narrow estuary and artificial tidal channel.The mathematical model is established based on the Saint Venant equations.Firstly,the trend of motion is described as a set of continuity equation and momentum equation,determining the area of simulation on the downstream boundary conditions.Secondly,in the simulation section according to different hydrogeological conditions,divided into numerous nodes.Among the numerous nodes the establishment of node equations corresponding to piecewise analysis.Finally,through harmonic analysis,characteristic method,for solving these equations,the finite difference method and finite element method.The original difference method is divided into explicit and implicit two,and must meet two requirements,namely format must be stable the accuracy and must meet the relevant to Pray.In this paper,in order to ensure the project of a water project in the Pearl River Delta water supply as an example,the analysis and calculation of target,determine the content of salt water intrusion in the project area,the effects of water quality and its effects on the surrounding water intake engineering cycle.The one-dimensional mathematical model of tidal flow,combined with the surrounding water demand,water intake and water intake of water during simulated river.According to the prediction of water demand,provide the theoretical basis for establishing the water supply scheme of river network area.This paper calculated on the basis of the numerical model analysisresults,provides the corresponding allocation scheme of regional water intake scheme reasonable suggestions for the corresponding period and the salinity water supply project.After the actual operation of this observation.The calculation model of the analysis results are accurate and reliable.Thus,in rivers and estuaries,using one-dimensional tidal flow mathematical model of water project rationality is feasible,and can provide a reliable theoretical basis for the salinity affected area of water allocation program.