期刊
FIRE AND MATERIALS
卷 39, 期 1, 页码 72-84出版社
WILEY
DOI: 10.1002/fam.2233
关键词
tunnel fire; critical ventilation velocity; exit; maximum smoke temperature
资金
- National Natural Science Foundation of China (NSFC) [51376173]
- Program for New Century Excellent Talents in University [NCET-13-0540]
- Anhui Provincial Natural Science Foundation [1208085QE81]
- CAS Special Grant for Postgraduate Research, Innovation and Practice
The critical ventilation velocity is almost the most well-investigated fire phenomenon in the tunnel fire research field whereas previous studies have always investigated it when the fire source is distant from the downstream tunnel exit. Fortunately, a recent study provided a set of data on the critical ventilation velocity for tunnel fires occurring near tunnel exits by small-scaled experiments, nevertheless, with a lack of further analysis. To demonstrate the relationship of the critical ventilation velocity and the distance between the fire and tunnel exit more explicitly and detailedly, a quantitative and graphical study was carried out and a correlation was presented in this paper. Inspired by this, a set of small-scaled experiments were carried out to investigate the influence of different longitudinal fire locations on maximum smoke temperature under the tunnel ceiling. Results show that unlike the critical ventilation velocity, the maximum smoke temperature was not obviously affected by longitudinal fire location. Copyright (c) 2014 John Wiley & Sons, Ltd.
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