Effect of natural ventilation on visibility in a laboratory scale underground tunnel simulation

Febrina Astarinadya, Harinaldi, Yulianto Sulistyo Nugroho

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The rapid growth of railway based public transportation in metropolitan city leads to the massive development of its supporting facilities such as underground tunnel. The minimum exposure towards ambient air in the underground tunnel encourages further studies about the conflagration smoke behavior which affects visibility change. In the existing situation, the smoke extraction system is supported by forced ventilation, which has been qualitatively known to be able to extract smoke during the evacuation time. The studies about the natural ventilation towards visibility change in fire conditions at the underground tunnel become interesting to be explored due to the possibility of mechanical smoke extraction system failure during evacuation stages. The fire laboratory test is carried out at a 1:16,25 scale tunnel model and numerical simulation using Fire Dynamics Simulation version 6 with 1:16,25 scale. The Froude Number is kept to be constant for both of the methods by controlling the heat release rate to ensure the ratio between fluid inertia force towards its gravitational weight is similar. In this case, the full-scaled smoke behavior can be generally predicted by the laboratory scale results. The different characteristic in visibility declination among the methods as the result indicates an inaccuracy of the simulation method to predict the visibility declination characteristic by the time. It is only generally able to predict whether the visibility decline or is constant by the time. The final conditional conclusion can be highlighted from this research is that results from the simulation method must be validated by the experimental results in predicting visibility declination characteristic in underground tunnel fire scenarios.

Original languageEnglish
Title of host publicationRecent Progress on
Subtitle of host publicationMechanical, Infrastructure and Industrial Engineering - Proceedings of the International Symposium on Advances in Mechanical Engineering, ISAME 2019: Quality in Research 2019
Editors Nahry, Dwinanti Rika Marthanty
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735419865
DOIs
Publication statusPublished - 6 May 2020
Event16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Advances in Mechanical Engineering, ISAME 2019 - Padang, Indonesia
Duration: 22 Jul 201924 Jul 2019

Publication series

NameAIP Conference Proceedings
Volume2227
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference16th International Conference on Quality in Research, QiR 2019 - 2019 International Symposium on Advances in Mechanical Engineering, ISAME 2019
Country/TerritoryIndonesia
CityPadang
Period22/07/1924/07/19

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