The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space

In the industrial field, the prediction of the contaminant gas distribution is very meaningful. However, when the leakage is high, not only the contaminant distribution will not follow the pattern of the original flowfield, but the contaminant buoyancy or negative buoyancy will affect the flowfield...

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Main Authors:	Zhang Qianru, Zhi Chengqiang, Huang Yixiang, Ye Wei, Gao Jun, Zhang Xu
Format:	Article
Language:	English
Published:	EDP Sciences 2019-01-01
Series:	E3S Web of Conferences
Online Access:	https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02061.pdf

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spelling	doaj-c55d36e2741147db8ff5683ebc54f71f2021-02-02T02:02:07ZengEDP SciencesE3S Web of Conferences2267-12422019-01-011110206110.1051/e3sconf/201911102061e3sconf_clima2019_02061The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large spaceZhang Qianru0Zhi Chengqiang1Huang Yixiang2Ye Wei3Gao Jun4Zhang Xu5School of Mechanical Engineering, Tongji UniversitySchool of Mechanical Engineering, Tongji UniversitySchool of Mechanical Engineering, Tongji UniversitySchool of Mechanical Engineering, Tongji UniversitySchool of Mechanical Engineering, Tongji UniversitySchool of Mechanical Engineering, Tongji UniversityIn the industrial field, the prediction of the contaminant gas distribution is very meaningful. However, when the leakage is high, not only the contaminant distribution will not follow the pattern of the original flowfield, but the contaminant buoyancy or negative buoyancy will affect the flowfield conversely. In this study, we focus on the effect of the contaminant emission rate on the velocity field and contaminant distribution with an obstacle in a large space by means of CFD simulation. Two leaking positions and five emission rates of the source have been taken into consideration. When the emission rate is high enough, the flowfield structure will be altered and new vortexes will appear. The contaminant dimensionless concentration distribution is totally different from the low-emission-rate conditions. The flammable region becomes significant, which leads to the potential risk of explosion.https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02061.pdf
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Zhang Qianru Zhi Chengqiang Huang Yixiang Ye Wei Gao Jun Zhang Xu
spellingShingle	Zhang Qianru Zhi Chengqiang Huang Yixiang Ye Wei Gao Jun Zhang Xu The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space E3S Web of Conferences
author_facet	Zhang Qianru Zhi Chengqiang Huang Yixiang Ye Wei Gao Jun Zhang Xu
author_sort	Zhang Qianru
title	The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
title_short	The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
title_full	The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
title_fullStr	The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
title_full_unstemmed	The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
title_sort	effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space
publisher	EDP Sciences
series	E3S Web of Conferences
issn	2267-1242
publishDate	2019-01-01
description	In the industrial field, the prediction of the contaminant gas distribution is very meaningful. However, when the leakage is high, not only the contaminant distribution will not follow the pattern of the original flowfield, but the contaminant buoyancy or negative buoyancy will affect the flowfield conversely. In this study, we focus on the effect of the contaminant emission rate on the velocity field and contaminant distribution with an obstacle in a large space by means of CFD simulation. Two leaking positions and five emission rates of the source have been taken into consideration. When the emission rate is high enough, the flowfield structure will be altered and new vortexes will appear. The contaminant dimensionless concentration distribution is totally different from the low-emission-rate conditions. The flammable region becomes significant, which leads to the potential risk of explosion.
url	https://www.e3s-conferences.org/articles/e3sconf/pdf/2019/37/e3sconf_clima2019_02061.pdf
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The effect of the contaminant emission rate on the velocity field and contaminant distribution with the presence of an obstacle in a large space

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