Temperature distribution of fire-induced flow along tunnels under natural ventilation

被引：60

作者：

Li, Liming ^{[1
]}

Cheng, Xudong ^{[1
]}

Wang, Xuegui ^{[1
]}

Zhang, Heping ^{[1
]}

机构：

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

来源：

JOURNAL OF FIRE SCIENCES | 2012年 / 30卷 / 02期

关键词：

Tunnel; fire-induced flow; temperature distribution; aspect ratio; SMOKE TEMPERATURE; CRITICAL VELOCITY; BURNING RATE; POOL FIRE; TESTS; GASES; MODEL;

D O I：

10.1177/0734904111428896

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A simple correlation is theoretically presented and numerically studied for the temperature distribution of fire-induced flow along tunnel ceiling, which could correlate the flow temperature for various tunnel aspect ratios and fire intensities. The aspect ratio of the tunnel cross section in the numerical models varies from 0.5 to 2.0, and the heat release rate of the fire source varies from 4.4 to 22 MW. The numerical results indicate that the correlation could be utilized for all tunnels but with separate fitting constants for aspect ratios less than unity and greater than or equal to unity, including all fire intensities considered. This correlation could prove valuable in fire modeling and installation design of fire detectors in tunnel-shape buildings.

引用

页码：122 / 137

页数：16

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