Critical velocity and backlayering distance in tunnel fires with longitudinal ventilation taking thermal properties of wall materials into consideration

Tanaka Futoshi; Takezawa Kohei; Hashimoto Yuji; Moinuddin Khalid A. M.

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Critical velocity and backlayering distance in tunnel fires with longitudinal ventilation taking thermal properties of wall materials into consideration

机译：纵向通风的隧道火灾中的临界速度和背层距离要考虑墙体材料的热特性

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A set of tunnel fire experiments using a 1:20 scale model tunnel was conducted taking into account the scaling of heat conduction through the tunnel walls. The critical velocity and backlayering distance measured in the tunnel fire experiments were compared with other reference data to examine the effect of the thermal properties of the tunnel walls on these two parameters. In this paper, we present new correlations for estimating the critical velocity and backlayering distance, and discuss the difference between our correlations and the previous ones from the viewpoint of the thermal properties of the tunnel wall materials.

机译：考虑到通过隧道壁的热传导比例，进行了使用1:20比例模型隧道的一组隧道火灾实验。将在隧道火灾实验中测得的临界速度和背层距离与其他参考数据进行比较，以检验隧道壁的热特性对这两个参数的影响。在本文中，我们提出了用于估计临界速度和背层距离的新的相关性，并从隧道壁材料的热性质的角度讨论了我们与以前的相关性之间的差异。

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来源
《Tunnelling and underground space technology》 |2018年第5期|36-42|共7页
作者
Tanaka Futoshi; Takezawa Kohei; Hashimoto Yuji; Moinuddin Khalid A. M.;
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作者单位

Univ Fukui, Mech Engn, Fac Engn, 3-9-1 Bunkyo, Fukui, Fukui 9108507, Japan;

Univ Fukui, Mech Engn, Grodunte Sch Engn, 3-9-1 Bunkyo, Fukui, Fukui 9108507, Japan;

Univ Fukui, Mech Engn, Grodunte Sch Engn, 3-9-1 Bunkyo, Fukui, Fukui 9108507, Japan;

Victoria Univ, Ctr Environm Safety & Risk Engn, POB 14428, Melbourne, Vic 8001, Australia;

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正文语种 eng
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关键词
Model experiment; Temperature distribution; Effect of wall materials; Correlations;

机译：模型实验;温度分布;墙体材料的影响;相关性;

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2. Numerical study of the effect of blockage on critical velocity and backlayering length in longitudinally ventilated tunnel fires [J] . Gannouni Soufien, Ben Maad Rejeb Tunnelling and underground space technology . 2015,第apra期

机译：阻塞对纵向通风隧道火灾临界速度和回填长度影响的数值研究
3. Study of critical velocity and backlayering length in longitudinally ventilated tunnel fires [J] . Ying Zhen Li, Bo Lei, Haukur Ingason Fire Safety Journal . 2010,第6a8期

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4. Critical velocity and backlayering length in tunnel fires using longitudinal ventilation system [C] . Y. Z. Li, B. Lei, Z. H. Xu, International Symposium on Aerodynamics and Ventilation of Vehicle Tunnels . 2009

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5. A Study of the Heat Release Rate of Tunnel Fires and the Interaction between Suppression and Longitudinal Air Flows in Tunnels. [D] . Ko, Yoon J. 2011

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8. Critical Ventilation Velocity in Tunnel Fires: A Computer Simulation [R] . Hwang, C. C., Edwards, J. C. 2008

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Critical velocity and backlayering distance in tunnel fires with longitudinal ventilation taking thermal properties of wall materials into consideration

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