Non-uniform high-precision curved surface grid water flow and water quality simulation and visualization method and system

Abstract

The embodiment of the invention provides a non-uniform high-precision curved surface grid water flow water quality simulation and visualization method and a system. The method and system are specificas following: firstly, the preset spatial scale is selected from the obtained river topographic data, and the high-precision surface model is established to a high-precision curved surface grid M1 ofa river channel; secondly, the grid unit which satisfies the terrain gradient change condition and the key research area in the M1 is subjected to a division and encryption process to generate a layered high-precision curved surface mesh M2; moreover, the two-dimensional water flow and water quality models are solved by two-dimensional discrete solution, and in that model calculation, the M2 can be used for dynamically dividing and merging the grid unit which meets the condition according to the change state of the water quality and the water flow; finally, the water flow and the water qualitystate information are visualized and mapped by the constructed three-dimensional virtual simulation platform to realize the visual simulation of the water flow and water quality based on the three-dimensional virtual environment. Therefore, the support platform can be provided for the implementation of the flood control disaster reduction, the water environment protection and the river long system and the most strict water resource management system.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a non-uniform high-precision curved surface grid water flow and water quality simulation and visualization method and system. Background technique [0002] In the process of numerical simulation of water flow and water quality, the generalization accuracy of terrain in the calculation domain and the adaptability of calculation grid cells to the change of water flow and water quality have a great influence on the simulation results. In actual engineering, the calculation domain often includes narrow channel areas and dikes with significant topographical changes, relatively flat channel beaches, and large floodplains. Modeling with a unified grid will fail to balance the calculation efficiency and accuracy of the model. At present, the processing of the underlying surface in complex terrain areas is rarely involved in water flow and water quality simulation, a...

AI Technical Summary

Problems solved by technology

In actual engineering, the calculation domain often includes narrow river channel areas and dikes with significant terrain changes, relatively flat river channel beaches and large floodplain areas. Using unified grid modeling will not be able to balance the calculation efficiency and accuracy of the model

At present, the processing of the underlying surface in complex terrain areas is rarely involved in the current water flow and water quality simulation, and the existing pre-processing software is usually used for modeling. The modeling method used by these software is mainly based on the inverse distance weighting method, and the modeling accuracy cannot be guaranteed.

Most water flow and water quality simulation calculations use visualization after the calculation is completed, and most of them are two-dimensional visualization, which lacks real-time intervention methods for the calculation process and visualization lacks the real environment, making it impossible to perform accurate spatial positioning, lack of immersion, and real-time performance. Not strong

Images