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Occupational exposure simulation analysis method based on CFD technology

A simulation analysis and occupational technology, applied in the field of occupational exposure simulation analysis based on CFD technology, which can solve problems such as single toxic gas leakage scene

Inactive Publication Date: 2019-10-22
天津市德安圣保安全卫生评价监测有限公司
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AI Technical Summary

Problems solved by technology

However, most of the poisonous gas leakage scenarios simulated by the current research are relatively simple, mainly focusing on the simulation of acute poisoning accident leakage, and fail to fully consider the influence of leakage and diffusion laws under normal working conditions and different operating conditions

Method used

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  • Occupational exposure simulation analysis method based on CFD technology
  • Occupational exposure simulation analysis method based on CFD technology
  • Occupational exposure simulation analysis method based on CFD technology

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Experimental program
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Embodiment

[0024] as shown in the attached picture

[0025] The present invention provides this occupational exposure simulation analysis technology based on CFD technology, which is mainly used in occupational exposure assessment in occupational disease hazard factor detection and occupational health risk assessment, quantitative analysis and practical application of hazardous substance exposure assessment, etc.

[0026] The technical content and method implementation steps of occupational exposure simulation analysis based on CFD technology are shown in the appendix figure 1 .

[0027] Case Analysis of Occupational Exposure Simulation in Workplace Based on CFD Technology

[0028] 1. CFD three-dimensional modeling

[0029] (1) Determine the simulation scene

[0030] The crude oil processing capacity of the atmospheric and vacuum distillation unit of a petrochemical enterprise is 1.3 million tons per year, and the annual processing hours are 8,400 hours. It mainly produces ethylene ma...

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Abstract

The invention provides an occupational exposure simulation analysis method based on a CFD technology. A simulation scene is determined through CFD three-dimensional modeling, and a three-dimensional grid of a whole simulation area can be constructed according to a device area layout diagram needing to be simulated; a grid of the whole simulation area is constructed from bottom to top in FLUENT preprocessing software GAMBIT. In the FLUENT, parameter setting is carried out according to a to-be-simulated leakage scene: an appropriate calculation model is selected according to a release state of toxic gas, physical properties of substances are defined, boundary conditions are set, and a flow field is initialized. The result is analyzed by using the post-processing function of the FLUENT and professional software such as Tecplot to obtain a gas diffusion path, a diffusion velocity field, an atmospheric pressure field, concentration field distribution and the like of toxic gas leakage simulation, so that the toxic gas leakage diffusion rule and exposure concentration of a workplace are analyzed.

Description

technical field [0001] The invention belongs to the scientific and technical field of occupational health risk management, in particular to an occupational exposure simulation analysis method based on CFD technology. Background technique [0002] Occupational exposure assessment is a key part of risk analysis, and its results affect the accuracy and reliability of risk assessment. Occupational exposure assessment is the focus of occupational health work and scientific research at home and abroad. Research on exposure assessment mainly includes the monitoring of the concentration of harmful substances in the environment, the determination of the internal dose or biological effect dose of exposed individuals, and the prediction of exposure dose based on mathematical simulation methods. [0003] At present, many foreign countries use comprehensive evaluation technology in pollutant diffusion evaluation technology, among which mathematical models and computer numerical simulatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 黄德寅王菁
Owner 天津市德安圣保安全卫生评价监测有限公司
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