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Assessment of the Usefulness of the Water Spray for Fire Extinguishing in Case of Fire in Tunnels  

Rie, Dong-Ho (인천대학교 안전공학과)
Lim, Kyung-Bum (한국소방안전협회)
Yoo, Ji-Oh (신흥대학 건축설비디자인과)
Publication Information
Fire Science and Engineering / v.22, no.5, 2008 , pp. 55-60 More about this Journal
Abstract
In this study, we conducted an FDS numerical simulation for the purpose of carrying out a basic assessment of the usefulness of the water spray for fire extinguishing. We analyzed the effect of securing the stability in temperature and smoke density in case of fire according to fire intensities (20MW, 50MW) and changes in wind speed. When there was no wind speed in tunnels, it was effective in securing the safety of people because the cooling effect of the water spray system had an excellent effect on reducing temperatures and smoke densities there. The higher a fire intensity is, the less effect it has on reducing smoke flows. When an air current exists in tunnels, its cooling effect disturbs the smoke stratification and lowers the visibility degree during evacuation. Therefore, the water spray for fire extinguishing should be put into action only after people take shelter during fire.
Keywords
FDS; Water spray system; Tunnels; Smoke density;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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