Three-dimensional dynamic simulation method and system for hazardous chemical substance diffusion process

Abstract

The invention provides a three-dimensional dynamic simulation method and system for a hazardous chemical substance diffusion process. The three-dimensional dynamic simulation method comprises the following steps: acquiring diffusion data of a hazardous chemical substance for diffusion visualization; generating a three-dimensional terrain scene according to the digital elevation image and the digital remote sensing image of the target area; calculating attributes of all particles of the current frame; drawing particles according to the attributes of all particles of the current frame to obtain a diffusion form of the current frame, wherein the calculation of the attributes of all particles of the current frame comprises the following steps: obtaining the position information of each particle in the three-dimensional terrain scene according to the position information of each position point in the diffusion data; and obtaining the color or color transparency of the corresponding particle in the current frame according to the concentration / thickness information of each position point in the diffusion data at the sampling moment. According to the invention, the concentration / thickness of the hazardous chemical substance can be visually displayed, the diffusion process can be interactively controlled, the pollution diffusion conditions of all moments and all areas can be comprehensively known, and auxiliary decision support is provided for accident emergency disposal.

Description

technical field [0001] The invention relates to the technical field of computer data processing and visualization, in particular to a three-dimensional dynamic simulation method and system for the diffusion process of hazardous chemicals. Background technique [0002] The diffusion process of hazardous chemicals can be represented by three-dimensional discrete data. There have been many researches on the three-dimensional visualization simulation method of discrete data diffusion at home and abroad, and the most mainstream is the particle method. Fuzzy objects such as flames, clouds, mist, smoke, diffuse objects, etc., cannot be drawn using traditional drawing methods because they have no fixed shape. William T Reeves proposed the use of particle systems to model these fuzzy objects. The particle system is composed of particle collections. Each particle in the particle collection has its own properties, including position, speed (speed and direction), size, color, lifespan,...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a three-dimensional dynamic simulation method and system for the diffusion process of hazardous chemicals, which is used to solve the problem in the prior art that there is no visual display of the concentration / thickness distribution and concentration / thickness change trend of the diffuser

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