Paper Title:
A Numerical Study on Operation Modes of Mechanical Ventilation in Underground Tunnels and Comparisons with Full-Scale Experiments and Existing Fire Codes in Taiwan
  Abstract

Due to land scarcity in greater Taipei area, continuously conversion from existing railroad to underground are performed to increase the land utility at different phases and span many years. In addition, integration issues between several transportation systems such as mass transit and high speed rail are also of great concerns. Fourth phase of Nangkang North Tunnel was completed and in full operation in September, 2008. During the construction period, fire codes in Taiwan for special constructions (e.g. ubnderground stations) are also going through various revisions while internationally, new regulations such as AS 4391 in Australia and NFPA130 in USA have been validated and updated. In order to verify the compliance of fire codes nationally and internationally, full scale experiments have been performed before opening to public service with emphasis on various operation modes of mechanical ventilation. This paper aims to numerically investigate and compare the effectiveness of CFD (Computational Fluid Dynamics) with experimental results. As a matter of fact, full scale experiments are implemented in fire codes in Taiwan for the structures which cannot fully comply with normal installation of fire equipments. While computational power and resources are improving tremendously in the past few years, we focus on the potentials to gain insightful information through numerical simulation and provide a repeatable reference for the engineers, designers and fire fighters as well as managerial levels in government before undertaking any full-scale experiment.

  Info
Periodical
Advanced Materials Research (Volumes 243-249)
Edited by
Chaohe Chen, Yong Huang and Guangfan Li
Pages
3355-3359
DOI
10.4028/www.scientific.net/AMR.243-249.3355
Citation
Y. K. Fuh, W. C. Huang, "A Numerical Study on Operation Modes of Mechanical Ventilation in Underground Tunnels and Comparisons with Full-Scale Experiments and Existing Fire Codes in Taiwan", Advanced Materials Research, Vols. 243-249, pp. 3355-3359, 2011
Online since
May 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Hong Li Zhao, Zhi Sheng Xu, Xue Peng Jiang
Abstract:The high-temperature toxic gas released by long railway tunnel fires not only causes great harm to persons, but also damages the structure of...
2473
Authors: Mozhdeh Shoaei, R. Maddahin, H. Afshin, B. Farhanie
Chapter 9: Environmentally Sustainable Manufacturing Processes and Systems
Abstract:Development of cities as well as population growth causes to development of public transportation especially subway lines. The high capacity...
983
Authors: Jik Chang Leong, C.L. Chang, Y. C. Chen, L.W. Chen
Chapter 5: Tunnel, Subway and Underground Facilities
Abstract:This work used FDS to simulate tunnel fires occur in a semi-circular longitudinally ventilated tunnel. By varying the parameters such as the...
2143
Authors: Shu Sheng Li, Ye Gao, Gao Wan Zou, Yan Huo
Chapter 3: Civil Engineering
Abstract:Fire models using Computational Fluid Dynamics (CFD) are now popular design or evaluation tools as the computer’s development sharply. By...
1103