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Experimental analysis of low air pressure influences on fire plumes
Zhou ZH; Yao W(姚卫); Li HH; Yuen R; Jian W
Source PublicationINTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
2014-03
Volume70Pages:578-585
ISSN0017-9310
Abstract

To examine the pressure effect on burning rate, flame height and axial temperature distribution of diffusion fires, experimental measurement and theoretical analysis on circular n-Heptane fires with serial sizes were conducted at two altitudes, i.e. 100,8 kPa (in a sea-level city Hefei) and 64.3 kPa (in a Tibetan city Lhasa). From the results, the mean burning rate at quasi-steady stage and boiling stage consistently implied that the exponent alpha (m '' (D) over tilde P-x) varies for different heat transfer domination stages, i.e. alpha <= 0 for conductive stage and alpha = 2/3 for convective stage. Analysis shows that the flame height, the axial flame and plume temperatures are all well correlated with the dimensionless heat release rate Q similar to Q/(PD5/2), with the correlation coefficients derived from the current low-pressure measurements. Analysis shows that the flame height and the plume temperature increase with the pressure rise as a power function of pressure for the same pool size. (C) 2013 Elsevier Ltd. All rights reserved.

KeywordLow Air Pressure Burning Rate Dimensionless Heat Release Fire Plume
Subject AreaThermodynamics ; Engineering ; Mechanics
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000330814800057
Funding OrganizationThe work described in this paper was supported by Key Program of National Natural Science Foundation of China (No. 51376172) and a Grant from the Research Grant Council of the Hong Kong Special Administrative Region [Project No. CityU 122612]. The authors deeply appreciate the supports.
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48754
Collection高温气体动力学国家重点实验室
Corresponding AuthorJian W
Recommended Citation
GB/T 7714
Zhou ZH,Yao W,Li HH,et al. Experimental analysis of low air pressure influences on fire plumes[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2014,70:578-585.
APA Zhou ZH,Yao W,Li HH,Yuen R,&Jian W.(2014).Experimental analysis of low air pressure influences on fire plumes.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,70,578-585.
MLA Zhou ZH,et al."Experimental analysis of low air pressure influences on fire plumes".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 70(2014):578-585.
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