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

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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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 based on the measured results.

[0011] Existing literature and patents mainly focus on simulating the three-dimensional wind environment of the city. Most of the boundary conditions are artificially specified and cannot reflect the actual wind environment conditions; There is no global multi-scale estimation of environmental pollutants based on atmospheric hydrodynamic equations, and it lacks real-time performance

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