Fast estimation method of UDMH diffusion concentration in long storage warehouse

doi:10.16265/j.cnki.issn 1003-3033.2021.01.016

Abstract

Abstract: In order to quickly obtain key information which is necessary to determine location of leakage source in long storage wareroom of UDMH, influence of storage tank, wall surface and ventilation state on diffusion law of UDMH vapor in wareroom was studied based on numerical simulation method. Furthermore, parameters in gas diffusion formula were revised to make it suitable for fast estimation of UDMH diffusion concentration distribution under special layout and state conditions in long storage warerooms. Finally, errors of calculation formula under different leak locations were analyzed. The results show that the relative position between leak location and storage tank has a greater impact on local diffusion parameters, which makes error of fast estimation result nearby storage tanks larger, but average error between storage tanks is less than 10%.

Key words: long storage wareroom, unsymmetrical dimethyl hydrazine (UDMH), diffusion concentration, numerical simulation, storage tank

CLC Number:

X944.4

CUI Cunyan, LIU Ningyuan, DUAN Yongsheng, TONG Jiang. Fast estimation method of UDMH diffusion concentration in long storage warehouse[J]. China Safety Science Journal, 2021, 31(1): 109-115.

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