Water quality simulation method and device

Abstract

The invention discloses a water quality simulation method and device, and the method comprises the steps of drawing discrete points along the boundary of a river channel, and constructing a triangulargrid based on the discrete points and the geographic information of the river channel to serve as the grid of a hydrodynamic model; fusing multi-dimensional information of the still water state of the river channel, and mapping the multi-dimensional information into initial values of grids in the hydrodynamic model; based on the collected observation value of each grid and the simulation value ofthe hydrodynamic model, dynamically updating the forecast part of the hydrodynamic model to obtain a forecast value; and on the basis of the observation value and the prediction value of each grid, carrying out the parameter calibration on the control equation of each water quality index so as to simulate and predict the diffusion of the water quality indexes. According to the scheme provided bythe embodiment of the invention, the hydrodynamic model can be applied to water quality simulation, and the water quality change condition of a river reach is obtained through simulation by simulatingthe diffusion effect of water flow.

Description

technical field [0001] The invention belongs to the technical field of water environment simulation, in particular to a water quality simulation method and device. Background technique [0002] The deterioration of water quality in lakes, rivers and estuaries has become a prominent environmental problem in our country. When controlling water pollution, it is necessary to grasp how the pollutants are mixed, migrated and distributed with the water flow, so as to predict and treat them, so that they can be targeted. Hydrodynamics is the study of describing the microscopic movement of water bodies, and the hydrodynamic model is a method to explore the physical processes in it. [0003] In related technologies, the foundation of the hydrodynamic model is Computational FluidDynamics (CFD), and the deeper one is Navier-Stokes Equations. If CFD is applied to real and natural water bodies, it will A hydrodynamic model is formed. [0004] Since the world's first S-P model (Street-P...

AI Technical Summary

Problems solved by technology

However, even if these input data are accurate enough, ideal results may not be obtained. Generally speaking, the hydrodynamic parameters related to the model are also the main factors affecting the simulation effect. The process of setting model parameters to obtain the most ideal results is called parameter calibration. (Calibration); on the other hand, the model meshing and calculation methods mentioned above will also have a slight impact on the results

Images