Simulation study on fire propagation characteristics on facade of concave structure buildings

doi:10.16265/j.cnki.issn1003-3033.2020.08.011

Abstract

Abstract: In order to explore fire propagation characteristics of XPS insulation materials on facade of concave structure buildings, a fire spreading model was established by utilizing simulation software FDS and large eddy simulation (LES) method. Then, variance of flame front and temperature for different fire-barrier belt width and directions of outside wind were summarized, and they were compared with conditions of no wind and no fire belt. The results show that flame front height varies with time in an exponential way. Fire belt, positive wind and outside wind in downward direction of 45 degrees can block and restrain fire at the beginning of its spread. In order to ensure fireproof effect, distance between fire belts should not be greater than 3 m. And wind in upward direction of 45 degrees will boost fire spread.

Key words: concave structural buildings, extruded polystyrene(XPS), external wall insulation material, fire-barrier belt, outside wind, flame spread

CLC Number:

X932

ZHANG Yutao, ZHANG Yujie, LI Yaqing. Simulation study on fire propagation characteristics on facade of concave structure buildings[J]. China Safety Science Journal, 2020, 30(8): 70-78.

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