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(사)한국터널지하공간학회

ISSN : 2233-8292

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Vol.11 No.3
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The dynamic characteristics of upper hot gas layer and smoke propagation along with tunnel slope in case of fire

(사)한국터널지하공간학회 / (사)한국터널지하공간학회, (P)2233-8292; (E)2287-4747
2009, v.11 no.3, pp.223-228




& (2009). The dynamic characteristics of upper hot gas layer and smoke propagation along with tunnel slope in case of fire. (사)한국터널지하공간학회, 11(3), 223-228.
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Abstract

The aim of this research is to analyse the dynamic characteristics of the hot upper smoke layer in case of fire in a tunnel. In order to get the result, computer simulation technique has been used. The fire scenarios were set on the basis of standard cross section of national and express highways through NIST’s FDS. As the area of a tunnel increased, the influence of the wind velocity decreased. Furthermore, the influence of the slope of a road was reduced as the wind velocity increased. On the other hand, as the wind velocity increased, the influence of the slope of a road decreased. This phenomena is believed to be caused by the cooling effect of wind which is over 1 m/s in speed, hence, reducing the influence of the effect of slope.

keywords
연기유동, 온도층, 터널화재, FDS, 냉각효과, Smoke propagation, temperature upper hot gas layer, fire in a tunnel, FDS, cooling effect

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