期刊
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
卷 38, 期 -, 页码 204-213出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jlp.2015.09.015
关键词
Process safety; Dust explosion; CFD simulations; Standard explosion vessel; Turbulence; Dust dispersion
A three-dimensional CFD model was developed to simulate the turbulent flow field induced by dust feeding and the associated dust dispersion within the 20-L explosion vessel equipped with the perforated annular nozzle. The model was validated against experimental data for pressure and root mean square velocity. Simulation results have shown that the turbulent kinetic energy is rather uniformly distributed and its values are significantly lower than those attained with the rebound nozzle. Furthermore, the perforated annular nozzle is able to generate a uniform dust/air cloud. However, a consistent fraction of the dust remains trapped inside the nozzle and, thus, it does not contribute to the explosion process. (C) 2015 Elsevier Ltd. All rights reserved.
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