期刊
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES
卷 27, 期 -, 页码 8-12出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jlp.2013.10.015
关键词
Computational fluid dynamics; 20 L bomb; Turbulent flow field; Dust dispersion; Dust sedimentation; Dust nominal concentration
Measurements of flammability and explosion parameters for dust/air mixtures require uniform dispersion of the dust cloud inside the test vessel. In a previous work, we showed that, in the standard 20 L sphere, the dust injection system does not allow generation of a uniform cloud, but rather high gradients of dust concentration are established. In this work, we used a previously validated three-dimensional CFD model to simulate the dust dispersion inside the 20 L sphere at different dust nominal concentrations (and fixed dust diameter). Results of numerical simulations have shown that, as the dust nominal concentration is increased, sedimentation prevails and, thus, when ignition is provided, the dust is mainly concentrated at the vessel walls. (C) 2013 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据