Study On Two-Dimensional Finite Volume Hydrodynamic Model And Its Application In Fuhe Tail Renovation Project

With the improvement of computer numerical simulation technology,the hydrodynamic model research method is being applied by more and more engineering projects.One of the core techniques for establishing hydrodynamic models is the discretization of control equations,in which finite element method,finite difference method and finite volume method are called classical grid discrete method.This paper first introduces the basic methods and research status of the mathematical model,and describes the theory of the two-dimensional hydrodynamic mathematical model from the formula derivation,the establishment equation,the equation solution,the mesh division and the number and the final high performance calculation TheBased on the finite volume method(FVM),a hydrodynamic model of Fortran language is compiled and calculated on the basis of two-dimensional unstructured grid.The influence of the diversion project on the upstream and downstream water level under different flood conditions is analyzed and checked.Based on the finite volume method(FVM),after the implementation of the Fuhe River diversion project;after the implementation of the dredging project;after the implementation of the three Yangzha project;Fuhe re-diversion project,dredging works and the implementation of the three-yang project after the impact of water The analysis.In the case of re-diversion project implementation,the water flow from the original river diversion into the Green Lan Lake,Green Lan Lake into the flood river,lake water level generally obstructed high,and since the crossing above the water level has different degrees of reduction,The water level is generally increased after the implementation of the dredging project.The water level of the Qinglan Lake area is generally obstructed after the implementation of the three-yang project.After the implementation of the project,the dredging works and the three-yang project are implemented simultaneously,Since the diversion above the more upstream by the three Yangzha project less affected.