Study of the Temperature Distribution in a Road Tunnel Under the Effect of Two Ventilation Systems

Kalech, Brahim; Bouterra, Mourad; Afif, El Cafsi; Belghith, Abdelfettah

doi:10.4236/jep.2011.23027

Cited by 5 publications

(4 citation statements)

References 47 publications

(41 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, we plan to utilize a MOVE platform in order to investigate characteristics of urban road-surface and air temperatures in night environments, as addressed by Svensson and Eliasson (2002). The next challenge will be to demonstrate the influence of tunnel internal temperature and the need for appropriate choices of surface materials to understand the damage characteristics of road tunnel fires, as highlighted by Brahim et al (2011) andLai, Wang, andXie (2016).…”

Section: Summary and Discussionmentioning

confidence: 99%

A case study of environmental characteristics on urban road-surface and air temperatures during heat-wave days in Seoul

Kim

Shin

et al. 2019

Atmospheric and Oceanic Science Letters

View full text Add to dashboard Cite

High road-surface temperature due to heat waves can lead to dangerous driving conditions such as tire blowouts and deformation induced by thermal stress on the roads. In this study, a Mobile Observation Vehicle dataset, with high spatial and temporal resolutions for the heat-wave episode that occurred on 16-17 August 2018, is used to understand environmental characteristics on urban road-surface and air temperatures in Seoul. This study demonstrates that the magnitude of urban road-surface temperature is dependent on the differences in incoming solar radiation due to screening of high-rise buildings in the Gangnam area, and is associated with the topographical features in the Gangbuk area. The road-surface temperature in the section of darker-colored asphalts was higher than that of lighter-colored asphalts, with a mean difference of 6.8°C, and both surface and air temperatures on the iron plate were highest, with means of 51.7°C and 35.1°C, respectively. In addition, during the water-sprinkling period, road-surface temperature was cooled by about 8.7°C (19%) compared with that in the period without water-sprinkling, but there was no significant change in air temperature. The current results could be practically used to improve roadsurface temperature prediction models for civil engineers or road managers.

show abstract

Section: Summary and Discussionmentioning

confidence: 99%

A case study of environmental characteristics on urban road-surface and air temperatures during heat-wave days in Seoul

Kim

Shin

et al. 2019

Atmospheric and Oceanic Science Letters

View full text Add to dashboard Cite

show abstract

“…Efficient control of smoke propagation is, therefore, one of the most important issues in designing tunnel ventilation and a full understanding of the characteristics of smoke propagation in tunnels is a necessity in order to proceed with a successful design. It seems then to be very important to devise evacuation measures and prepare for a proper smoke ventilation system inside tunnels [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate

Mouangue

Onguene

Zaida

et al. 2017

Journal of Combustion

View full text Add to dashboard Cite

When a fire occurs in a tunnel in the absence of sufficient air supply, large quantities of smoke are generated, filling the vehicles and any space available around them. Hot gases and smoke produced by fire form layers flowing towards extremities of the tunnel which may interfere with person’s evacuation and firefighter’s intervention. This paper carries out a numerical simulation of an unexpected fire occurring in a one-way tunnel in order to investigate for the critical velocity of the ventilation airflow; this one is defined as the minimum velocity able to maintain the combustion products in the downstream side of tunnel. The computation is performed successively with two types of fuels representing a large and a small heat release rate, owing to an open source CFD code called ISIS, which is specific to fires in confined and nonconfined environments. It is indicated that, after several computations of full-scale fires of 43.103 and 19.103 kJ/kg as heat release rate, the velocities satisfying the criterion of healthy environment in the upstream side of the tunnel are 1.34 m/s and 1.12 m/s, respectively.

show abstract

“…They claimed that the plug-Holling occurs with lower value. Through a combination of this type of ventilation and that of a longitudinal ventilation, Brahim Kalech et al [4] studied the effect of these two ventilation systems on the temperature distribution using the CFD code ( SDS).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Natural Ventilation on Temperature and Pressure Distribution in a Road Tunnel Fire with Vertical Shaft

Benabdelaziz¹,

Bouterra²,

Cafsi³

et al. 2015

ILCPA

View full text Add to dashboard Cite

This paper has analysed the influence of plug-holing on thermal and pressure field evolution in urban road tunnel fires with vertical shaft by Large Eddy Simulation (LES). Results show that the temperature reduction rate is about 70 % at the tunnel half and it increases about 80 % at the ceiling level. The pressure field is characterized by a pseudo-periodic behavior which reaches a maximum reduction rate (78 %) in case of natural ventilation. The numerical tool used is FDS (version 5).

show abstract

Study of the Temperature Distribution in a Road Tunnel Under the Effect of Two Ventilation Systems

Cited by 5 publications

References 47 publications

A case study of environmental characteristics on urban road-surface and air temperatures during heat-wave days in Seoul

A case study of environmental characteristics on urban road-surface and air temperatures during heat-wave days in Seoul

Numerical Investigation of Critical Velocity in Reduced Scale Tunnel Fire with Constant Heat Release Rate

Evaluation of Natural Ventilation on Temperature and Pressure Distribution in a Road Tunnel Fire with Vertical Shaft

Contact Info

Product

Resources

About