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KMID : 1039220230330030346
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Journal of Korean Society of Occupational and Environmental Hygiene
2023 Volume.33 No. 3 p.346 ~ p.354
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A Study on the Analysis of Chemical Leakage Accidents Using CFD Simulation
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An Su-Bin
Jang Chang-Bong
Lee Kyung-Su
Yayun Li
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Abstract
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Objectives: Chemical accidents cause extensive human and environmental damage. Therefore, it is important to prepare measures to prevent their recurrence and minimize future damage through accident investigation. To this end, it is necessary to identify the accident occurrence process and analyze the extent of damage. In this study, the development process and damage range of actual chemical leakage accidents were analyzed using CFD.
Methods: For application to actual chemical leakage accidents using FLACS codes specialized for chemical dispersion simulation among CFD codes, release rate calculation and 3D geometry were created, and scenarios for simulation were derived.
Results: The development process of the accident and the dispersion behavior of materials were analyzed considering the influencing factors at the time of the accident. In addition, to confirm the validity of the results, we compared the results of the actual damage impact investigation and the simulation analysis results. As a result, both showed similar damage impact ranges.
Conclusions: The FLACS code allows the detailed analysis of the simulated dispersion process and concentration of substances similar to real ones. Therefore, it is judged that the analysis method using CFD simulation can be usefully applied as a chemical accident investigation technique.
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KEYWORD
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accident analysis, CFD, chemical accident, consequence analysis, 3D modeling
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