Modeling of Atmospheric Toxic Release and Dispersion Using CFD

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Mokhtari, Mojtaba | 2010

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41544 (06)
University: Sharif University of Technology
Department: Chemical and Petroleum Engineering
Advisor(s): Rashtchian, Davood
Abstract:
In this project, ammonia dispersion in the environment have been investigated and the experimental data have been used in order to show accuracy of calculations. Also, the results of CFD have been compared with the results of PHAST software. The results show that when there is no obstacle in the way of gas release, dispersion models will get good results, but due to existence of the obstacle, their error will be increased to 300%. However, the error resulting from CFD is less than 24% even if there are obstacle there. The effects of obstacle’s distance and height on the dispersion of ammonia gas are investigated. This study showed that the concentration of ammonia increase, when the distance of obstacle increases. By increase in height of obstacle, the concentration decreases in first and finally increases. the k-ε method is used in this project
Keywords:
Hazardous Gas ; Computational Fluid Dynamics (CFD) ; Ammonia ; Dispersion ; K-Epsilon Turbulence Model

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