Emergency Region of Instantaneous Dispersion Caused by Leakage of Natural Gas Highly Containing Carbon Dioxide
Accident of asphyxiation and explosion is likely to be induced by the instantaneous leakage of natural gas (NG) highly containing carbon dioxide. -It is necessary to study the distribution of emergency region so as to make good emergency response. Distribution of emergency region was simulated using method of computational fluid dynamics. Research suggested that NG highly containing carbon dioxide is of the typical characteristics of dense gas dispersion and the main emergency response region is located in the downwind near-source region. The geometric shape of flammable region caused by instantaneous puff dispersion of NG highly containing carbon dioxide takes on an irregular cirque and the lateral scale varies relatively little, however, the along-wind dimension of the flammable region changes much. Overall the dimension of the flammable region changes over time taking on a parabolic shape whose opening is down until the flammable region no longer exists. The scope of the flammable region caused by instantaneous puff dispersion of NG highly containing carbon dioxide is much smaller both in time and space scales than that of asphyxia region.
carbon dioxide natural gas instantaneous dispersion emergency region numerical simulation
Yuanpan Zheng Junjie Guo Yali Zhang
School of Computer and Communication Engineering Zhengzhou University of Light Industry Engineering Safety Engineering Department Henan Institute of Engineering Zhengzhou 451191, PRC Project Department for Construction of New Campus Zhengzhou University of Light Industry Zhengzhou 4
国际会议
北京
英文
132-135
2011-08-08（万方平台首次上网日期，不代表论文的发表时间）