Non-dimensional correlations on flame height and axial temperature profile of a buoyant turbulent line-source jet fire plume

被引：23

作者：

Zhang, Xiaochun ^{[1
]}

Hu, Longhua ^{[1
]}

Zhang, Xiaolei ^{[1
]}

Yang, Lizhong ^{[1
]}

Wang, Shuangfeng ^{[2
]}

机构：

[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China

[2] Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China

来源：

JOURNAL OF FIRE SCIENCES | 2014年 / 32卷 / 05期

关键词：

Line-source buoyant turbulent jet fire; flame height; axial temperature profile; flame Froude number; REDUCED PRESSURE ATMOSPHERE; DIFFUSION FLAMES; LIFT-OFF; AIR; PROBE;

D O I：

10.1177/0734904114529258

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This article investigates flame height and axial temperature profile of a buoyant turbulent line-source jet fire plume. Previous correlations have been mainly for axi-symmetrical fire sources or linear pool-type (no initial momentum) fire sources. Experiments were carried out for this study using a 3 mm (width) x 95 mm (length) line-source nozzle with propane as the fuel. Flame heights and axial temperature profiles were measured for different heat release rates. It was found that the flame heights can be well correlated by flame Froude number with a 2/3 power function based on scaling analysis. A global non-dimensional four-regions correlation (continuous flame region, intermittent flame region, line-plume region, and axi-symmetric-plume region) is proposed to characterize the axial temperature profile of a line-source jet fire plume.

引用

页码：406 / 416

页数：11

共 12 条

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