Critical ventilation velocity for tunnel fires occurring near tunnel exits

Kuang Chung Tsai; Yee Ping Lee; Shin Ku Lee

doi:10.1016/j.firesaf.2011.08.003

Critical ventilation velocity for tunnel fires occurring near tunnel exits

Kuang Chung Tsai, Yee Ping Lee, Shin Ku Lee

Research Center for Energy Technology and Strategy

Research output: Contribution to journal › Article › peer-review

30 Citations (Scopus)

Abstract

Ventilation is an effective method for controlling smoke during a tunnel fire. The critical ventilation velocity u_cr is generally defined as the minimum velocity at which smoke is prevented from spreading against the longitudinal ventilation flow in tunnel fire situations. This study conducted small-scale experiments to investigate u_cr for situations when tunnel fire occurs near tunnel exits. The model tunnel was 4 m long, 0.6 m wide and 0.6 m tall, and the fires were located at 0.5 m, 1.0 m and 1.5 m from the tunnel exit. 6.3×6.3 cm² and 9.0×9.0 cm² square asoline fuel pans were used as fire source. Results show that u_cr decreases as the fire approaches the tunnel exit.

Original language	English
Pages (from-to)	556-557
Number of pages	2
Journal	Fire Safety Journal
Volume	46
Issue number	8
DOIs	https://doi.org/10.1016/j.firesaf.2011.08.003
Publication status	Published - 2011 Nov

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Safety, Risk, Reliability and Quality
General Physics and Astronomy

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10.1016/j.firesaf.2011.08.003

Cite this

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title = "Critical ventilation velocity for tunnel fires occurring near tunnel exits",

abstract = "Ventilation is an effective method for controlling smoke during a tunnel fire. The critical ventilation velocity ucr is generally defined as the minimum velocity at which smoke is prevented from spreading against the longitudinal ventilation flow in tunnel fire situations. This study conducted small-scale experiments to investigate ucr for situations when tunnel fire occurs near tunnel exits. The model tunnel was 4 m long, 0.6 m wide and 0.6 m tall, and the fires were located at 0.5 m, 1.0 m and 1.5 m from the tunnel exit. 6.3×6.3 cm2 and 9.0×9.0 cm2 square asoline fuel pans were used as fire source. Results show that ucr decreases as the fire approaches the tunnel exit.",

author = "Tsai, {Kuang Chung} and Lee, {Yee Ping} and Lee, {Shin Ku}",

note = "Funding Information: The authors would like to thank the National Science Council of the Republic of China , Taiwan for financially supporting this research under Contract no. NSC 96-2221-E-327-015-MY3. Tzu-Young Chou is appreciated for his carrying out data and Ted Knoy for his editorial assistance.",

year = "2011",

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doi = "10.1016/j.firesaf.2011.08.003",

language = "English",

volume = "46",

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T1 - Critical ventilation velocity for tunnel fires occurring near tunnel exits

AU - Tsai, Kuang Chung

AU - Lee, Yee Ping

AU - Lee, Shin Ku

N1 - Funding Information: The authors would like to thank the National Science Council of the Republic of China , Taiwan for financially supporting this research under Contract no. NSC 96-2221-E-327-015-MY3. Tzu-Young Chou is appreciated for his carrying out data and Ted Knoy for his editorial assistance.

PY - 2011/11

Y1 - 2011/11

N2 - Ventilation is an effective method for controlling smoke during a tunnel fire. The critical ventilation velocity ucr is generally defined as the minimum velocity at which smoke is prevented from spreading against the longitudinal ventilation flow in tunnel fire situations. This study conducted small-scale experiments to investigate ucr for situations when tunnel fire occurs near tunnel exits. The model tunnel was 4 m long, 0.6 m wide and 0.6 m tall, and the fires were located at 0.5 m, 1.0 m and 1.5 m from the tunnel exit. 6.3×6.3 cm2 and 9.0×9.0 cm2 square asoline fuel pans were used as fire source. Results show that ucr decreases as the fire approaches the tunnel exit.

AB - Ventilation is an effective method for controlling smoke during a tunnel fire. The critical ventilation velocity ucr is generally defined as the minimum velocity at which smoke is prevented from spreading against the longitudinal ventilation flow in tunnel fire situations. This study conducted small-scale experiments to investigate ucr for situations when tunnel fire occurs near tunnel exits. The model tunnel was 4 m long, 0.6 m wide and 0.6 m tall, and the fires were located at 0.5 m, 1.0 m and 1.5 m from the tunnel exit. 6.3×6.3 cm2 and 9.0×9.0 cm2 square asoline fuel pans were used as fire source. Results show that ucr decreases as the fire approaches the tunnel exit.

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SP - 556

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JO - Fire Safety Journal

JF - Fire Safety Journal

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Critical ventilation velocity for tunnel fires occurring near tunnel exits

Abstract

All Science Journal Classification (ASJC) codes

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