Numerical Simulation of Diffusion of UDMH in Confined Space

Abstract:

In order to study the diffusion pattern of Unsymmetrical Dimethyl Hydrazine (UDMH) in a confined space, a 3D geometric model of cylindrical space with a column obstacle in the center was built and diffusion of UDMH in the space was simulated by using FLUENT. The gas concentration distribution in the space was gained at different moments, and the polluted area with concentration above 0.5ppm was focused on. The simulation result suggests that the toxic gas is mainly concentrated in an area about 1m above the bottom of the space, and ventilation can effectively reduce the hazard time and continuous expansion of polluted area.

• Periodical: Applied Mechanics and Materials (Volumes 295-298)
• Pages: 586-589
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.295-298.586
• Online since: February 2013
• Authors: Jia Zhao Chen, Chao Ning, Yu Xiang Zhang
• Keywords: Confined Space, Diffusion, Numerical Simulation, Unsymmetrical Dimethyl Hydrazine

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