Computational fluid dynamics (CFD) and multi-data sources-based urban real-time global environment estimation method

A multi-data source, urban technology, applied in the field of environmental engineering, can solve the problems of not considering the conversion process of urban meteorological data to boundary conditions, lack of real-time performance, and not considering the effect of precipitation on pollutant settlement, etc.

Active Publication Date: 2017-05-10
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

However, this numerical simulation does not consider the sedimentation effect of precipitation on pollutants. At the same time, the boundary conditions are artificially specified, and the conversion process from real urban meteorological data to boundary conditions is not considered. At the same time, it is only an isolated simulation simulation, and the calculation results cannot be updated in real time b...

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  • Computational fluid dynamics (CFD) and multi-data sources-based urban real-time global environment estimation method
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  • Computational fluid dynamics (CFD) and multi-data sources-based urban real-time global environment estimation method

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[0056] In order to facilitate those skilled in the art to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings.

[0057] Such as figure 1 Shown, the present invention is specifically implemented as follows:

[0058] The first step is to model the city in 3D. The present invention first obtains the three-dimensional model of the city based on Google Earth.

[0059] Select the urban area to be solved from Google Earth, use 3D ripper to analyze the DirectX data stream when Google Earth is running, export a 3D urban building model with geographic information, and save it as a *.3dr file.

[0060] Import the 3dr file into 3d Max for texture settings, save it as an .obj file, and then use DeepExploration to generate a sketchup model file, such as figure 2 As shown, the picture is a three-dimensional model of the city combined with geographic information.

[0061] In the urban-scale flow fiel...

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Abstract

The present invention relates to a computational fluid dynamics (CFD) and multi-data sources-based urban real-time global environment estimation method. The method is based on historical data of urban environment monitor stations, global mesoscale meteorological forecast results, national meteorological data, urban major pollutant source data, a urban geographical three-dimensional model and road surface real-time monitor data of a motor vehicle exhaust detection system, CFD is used as a calculation engine, an environment quality mode is adaptively switched according to meteorological information, a multiscale grid discrete urban model is used, a multi-component pollution model is introduced, and a meteorological dry and wet settlement process is considered, so as to establish an urban global air and environment quality real-time estimation method. The urban environment quality estimation method is much better than existing methods in comprehensiveness, accuracy and real-time performance.

Description

technical field [0001] The invention relates to a method for estimating the real-time global environment of a city based on CFD (computational fluid dynamics) and multiple data sources, and a method for estimating the global atmospheric environment of a city by integrating meteorological data, pollutant data, real-time monitoring data of motor vehicle exhaust, and a city model. field of environmental engineering. Background technique [0002] With the development and progress of society, people's demand for refined and personalized weather data is becoming more and more significant. At the same time, the phenomenon of environmental pollution is becoming more and more serious. In recent years, many cities in my country have experienced smog in large areas, affecting people's physical and mental health and production and life. Environmental pollution control has become a major issue of national management. The research and analysis of environmental pollution first needs to ob...

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Application Information

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IPC IPC(8): G06F17/50G06T17/05
CPCG06F30/20G06T17/05Y02A90/10
Inventor 康宇王雪峰李泽瑞陈绍冯昌吉
Owner UNIV OF SCI & TECH OF CHINA
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