도로터널 화재시 연기의 전파특성과 구조체에 미치는 영향에 관한 수치 해석적 연구 (A numerical study on the characteristics of the smoke movement and the effects of structure in road tunnel fire)
| Author(s): |
Ji-Oh Yoo
Byung-Chil Oh Hyo-Gyu Kim |
|---|---|
| Medium: | journal article |
| Language(s): | Korean |
| Published in: | Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집), 2013, n. 3, v. 15 |
| Page(s): | 289-300 |
| DOI: | 10.9711/ktaj.2013.15.3.289 |
| Abstract: | This study numerically considered the characteristic of smoke movement and the effect of hot smoke gas on tunnel wall surface temperature during road tunnel fire under boundary condition of fire growth curve that is applied to fire analysis in road tunnels. The maximum heat release rate were 20 MW and 100 MW and tunnel air velocities were 2.5 m/s and velocity induced by thermal buoyancy respectively, also the cooling effect of tunnel wall was considered. As results, when tunnel air velocity was constant at 2.5 m/s during tunnel fire, due to the cooling effect of tunnel wall, the smoke layer was rapidly descent after some distance and it flowed the same patterns at the downstream. When heat release rate was 100 MW (and jet fan was not installed), the maximum temperature of tunnel wall surface has risen up to 615°C. The heat transfer coefficient of tunnel wall surface was varied from 13 to 23W/m²Capproximately. |
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data sheet - Reference-ID
10394747 - Published on:
04/01/2020 - Last updated on:
24/01/2020
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