CFP last date
21 October 2024
Reseach Article

Numerical Simulation of a Full Scaled Fire Test of the Tunnel with Natural Ventilation

by Mehdi Rafiei
International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 115 - Number 1
Year of Publication: 2015
Authors: Mehdi Rafiei
10.5120/20113-2158

Mehdi Rafiei . Numerical Simulation of a Full Scaled Fire Test of the Tunnel with Natural Ventilation. International Journal of Computer Applications. 115, 1 ( April 2015), 9-16. DOI=10.5120/20113-2158

@article{ 10.5120/20113-2158,
author = { Mehdi Rafiei },
title = { Numerical Simulation of a Full Scaled Fire Test of the Tunnel with Natural Ventilation },
journal = { International Journal of Computer Applications },
issue_date = { April 2015 },
volume = { 115 },
number = { 1 },
month = { April },
year = { 2015 },
issn = { 0975-8887 },
pages = { 9-16 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume115/number1/20113-2158/ },
doi = { 10.5120/20113-2158 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:53:35.690534+05:30
%A Mehdi Rafiei
%T Numerical Simulation of a Full Scaled Fire Test of the Tunnel with Natural Ventilation
%J International Journal of Computer Applications
%@ 0975-8887
%V 115
%N 1
%P 9-16
%D 2015
%I Foundation of Computer Science (FCS), NY, USA
Abstract

A mechanical ventilation system plays a major role in tunnels safety. Over the world, different ventilation systems regarding to the tunnel geometry and other parameters are used for tunnel ventilation in the normal and fire operations. However, in short tunnels depending on the tunnel geometry and traffic condition, there is the possibility of passing traffic through a tunnel without mechanical ventilation. Normally, natural ventilation is applied in short tunnels. In longer tunnels, additional measures in geometry such as openings or shafts are necessary to support natural ventilation. Due to the high costs of the electro-mechanical installations, maintenance and electricity power consumption for mechanical ventilation, having tunnels with natural ventilation system will be the best option. But, reliability of such ventilation systems in case of emergency must be substantiated before applying to tunnels. The main concern is a proper smoke evacuation in a fire case. In this survey, in order to set up a suitable CFD model, numerical simulation of a pre-conducted fire test by using same boundary conditions is done. These simulations were further extended to fires with higher capacities to show smoke and temperature behavior during the higher fires. The newest version of the FDS software (Fire Dynamic Simulator 6) was employed for simulations.

References
  1. Tong Yan, Shi MingHeng, Gong YanFeng, He JiaPeng. 2009. Full-scale experimental study on smoke flow in natural ventilation road tunnel fires with shafts. Tunneling and Underground Space Technology, 24, 627–633.
  2. Yanfu Wang, Juncheng Jiang, Dezhi Zhu. 2009. Full-scale experiment research and theoretical study for fires in tunnels with roof openings. Fire safety Journal, 44, 339–348.
  3. Yanfu Wang, Juncheng Jiang, Dezhi Zhu. 2009. Diesel oil pool fire characteristic under natural ventilation conditions in tunnels with roof openings. Journal of Hazardous Materials, 166, 469–477.
  4. Liang Yi, Qiqi Xu, Zhisheng Xu, Dexing Wu. 2014. An experimental study on critical velocity in sloping tunnel with longitudinal ventilation under fire. Tunneling and Underground Space Technology, 43, 198–203.
  5. McGrattan, k. , Hostikka, S. , McDermott, R. , Floyd, J. , Weinschenk, C. , Overholt, K. Fire Dynamics Simulator User's Guide (Version 6. 1. 1). NIST Special Publication 1019 Sixth Edition; 2014.
  6. Glenn P. Forney. Fire Dynamics Simulator Volume I: User's Guide (Version 6. 1. 11). NIST Special Publication 1017-1 Sixth Edition; 2014.
  7. Rafiei, M. , Sturm, P. J. 2014. Influence of fires on-air velocity measurements at downstream measurement locations. 7th International Conference Tunnel Safety and Ventilation, Graz, Austria, pp. 265-272.
  8. Ying Zhen Li, Bo Lei, Haukur Ingason. 2010. Study of critical velocity and backlayering length in longitudinally ventilated tunnel fires. Fire safety Journal, 45, 361–370.
  9. C. G. Fan, J. Ji, Z. H. Gao, J. Y. Han, J. H. Sun. 2013. Experimental study of air entrainment mode with natural ventilation using shafts in road tunnel fires. International journal heat mass transfer. 56, 750–757.
  10. Jae Seong Roh, Seung Shin Yang, Hong Sun Ryou, Myong O Yoon, Youn Tae Jeong. 2008. An experimental study on the effect of ventilation velocity on burning rate in tunnel fires—heptane pool fire case. Building and Environment, 43, 1225–1231.
  11. Kuang-Chung Tsai, Yee-Ping Lee, Shin-Ku Lee. 2011. Critical ventilation velocity for tunnel fires occurring near tunnel exits. Fire safety Journal, 46, 556–557.
  12. Jae Seong Roh, Hong Sun Ryou, Dong Hyeon Kim, Woo Sung Jung, Yong Jun Jang. 2007. Critical velocity and burning rate in pool fire during longitudinal ventilation. Tunneling and Underground Space Technology, 22, 262–271.
  13. Ciro Caliendo, Paolo Ciambelli, Maria Luisa, De Guglielmo, Maria Grazia Meo, Paola Russo. 2012. Numerical simulation of different HGV fire scenarios in curved bi-directional road tunnels and safety evaluation. Tunneling and Underground Space Technology, 31, 33–50.
Index Terms

Computer Science
Information Sciences

Keywords

Natural ventilation Tunnel fire Fire simulation Smoke propagation FDS 6