An experimental study on the effect of ventilation velocity on burning rate in tunnel fires-heptane pool fire case
- Authors
- Roh, Jae Seong; Yang, Seung Shin; Ryou, Hong Sun; Yoon, Myong O.; Jeong, Youn Tae
- Issue Date
- Jul-2008
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- tunnel fire; ventilation velocity; burning rate; n-heptane pool fire; froude scaling
- Citation
- BUILDING AND ENVIRONMENT, v.43, no.7, pp 1225 - 1231
- Pages
- 7
- Journal Title
- BUILDING AND ENVIRONMENT
- Volume
- 43
- Number
- 7
- Start Page
- 1225
- End Page
- 1231
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/23709
- DOI
- 10.1016/j.buildenv.2007.03.007
- ISSN
- 0360-1323
1873-684X
- Abstract
- The 1/20 reduced-scale experiments using Fronde scaling are conducted to investigate the effect of longitudinal ventilation velocity on the burning rate in tunnel fires. The n-heptane pool fires with heat release rate ranging front 3.71 to 15.6 kW are used in this study. A load cell is used to measure the mass loss rate of burning fuel and the temperature distributions are measured by K-type thermocouples in order to investigate smoke movement. The ventilation velocity in the reduced-scale tunnel is controlled by the wind tunnel through an inverter. The increases in ventilation velocity lead to enhance burning rate of n-heptane fuel. The reason is that the oxygen supply effect prevails rather than the cooling effect as the ventilation velocity increases. As a result, the heat release rates in experiment are larger than constant heat release rates by 4.45-11.3 times in the n-heptane pool fires. Also, it is found that non-dimensional critical ventilation velocity is proportional to one-third power of non-dimensional heat release rate. (C) 2007 Elsevier Ltd. All rights reserved.
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Collections - College of Engineering > School of Mechanical Engineering > 1. Journal Articles
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