Journal ArticleDOI
Study on the motion fire of one-train and multiple-train in the tunnel
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In this article, the authors investigated the characteristics of motion fire in one-train and multiple-train tunnels with longitudinal ventilation and established the critical speed model and applied it to one train tunnel and multiple train tunnel scenarios.About:
This article is published in Journal of Wind Engineering and Industrial Aerodynamics.The article was published on 2020-08-01. It has received 9 citations till now. The article focuses on the topics: Train & Critical speed.read more
Citations
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Journal ArticleDOI
Effect of lateral concentrated smoke extraction on the smoke back-layering length and critical velocity in a longitudinal ventilation tunnel
TL;DR: In this paper, the authors investigated the thermal smoke back-layer behavior and critical ventilation velocity of tunnel fires under the combined effect of lateral concentrated smoke extraction and longitudinal ventilation and proposed a correlation equation for the critical velocity.
Journal ArticleDOI
Influence of blockage ratio on slipstreams in a high-speed railway tunnel
TL;DR: In this paper, a computational fluid dynamics (CFD) study was carried out to explore the three-dimensional transient airflow induced by a commercial high-speed train circulating through tunnels at 350 km/h under different blockage ratios.
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Study on smoke spread characteristic in urban interval tunnel fire
TL;DR: Wang et al. as mentioned in this paper used the fire dynamics simulator (FDS) to analyze the ceiling temperature and velocity field, and 2 m height visibility changes in different subway carriages fire scenarios.
Journal ArticleDOI
Critical velocity in point extraction for dual longitudinally ventilated tunnel fire
TL;DR: In this paper , the authors established a model to predict the critical velocity in a smoke point extraction system through theoretical analysis, which was obtained by using small-scale model tests, and the results indicated that critical velocity was exponentially related to the distance between the smoke vent and the fire source.
Journal ArticleDOI
Thermo-economic optimization of the direct-condensation radiant heating panel: A numerical-based approach
TL;DR: A numerical-based optimization approach is proposed for the thermo-economic performance improvement of the direct-condensation radiant heating panel (DRHP) and the particle swarm optimization (PSO) algorithm is adopted to maximize the heating capacity under per unit cost of the DRHP.
References
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Journal ArticleDOI
Control of smoke flow in tunnel fires
Yasushi Oka,Graham T. Atkinson +1 more
TL;DR: In this paper, the specification of the longitudinal ventilation necessary to prevent upstream movement of combustion products in a tunnel fire is discussed, and the effects of changes in the shape, size and location of the fire on the critical velocity have been investigated.
Book
The Handbook of Tunnel Fire Safety
Alan N. Beard,Richard Carvel +1 more
TL;DR: A history of tunnel fire incidents can be found in this article, where the authors present a history of real tunnel fires as well as a detailed discussion of some practical issues related to tunnel fire safety management.
Journal ArticleDOI
A study on the maximum temperature of ceiling jet induced by rectangular-source fires in a tunnel using ceiling smoke extraction
TL;DR: In this paper, the authors analyzed the physics characteristics of the flame plume temperature, induced by a ceiling jet and their coupling with an extraction flow, using a ceiling smoke extraction. And the results indicated that the new global model can effectively predict experimental data.
Journal ArticleDOI
Smoke extraction experiments in case of fire in a tunnel
Olivier Vauquelin,O. Mégret +1 more
TL;DR: In this article, smoke extraction in the case of a fire in a tunnel is investigated experimentally on a 1:20th tunnel scale model with two mechanical exhaust ducts, on both sides of the fire source.