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http://dx.doi.org/10.7780/kjrs.2021.37.3.3

A Numerical Study on the Effects of Meteorological Conditions on Building Fires Using GIS and a CFD Model  

Mun, Da-Som (Division of Earth Environmental System Science, Pukyong National University)
Kim, Min-Ji (Division of Earth Environmental System Science, Pukyong National University)
Kim, Jae-Jin (Division of Earth Environmental System Science, Pukyong National University)
Publication Information
Korean Journal of Remote Sensing / v.37, no.3, 2021 , pp. 395-408 More about this Journal
Abstract
In this study, we investigated the effects of wind speed and direction on building fires using GIS and a CFD model. We conducted numerical simulations for a fire event that occurred at an apartment in Ulsan on October 8, 2020. For realistic simulations, we used the profiles of wind speeds and directions and temperatures predicted by the local data assimilation and prediction system (LDAPS). First, using the realistic boundary conditions, we conducted two numerical simulations (a control run, CNTL, considered the building fire and the other assumed the same conditions as CNTL except for the building fire). Then, we conducted the additional four simulations with the same conditions as CNTL except for the inflow wind speeds and direction. When the ignition point was located on the windward of the building, strong updraft induced by the fire had a wide impact on the building roof and downwind region. The evacuation floor (15th floor) played a role to spread fire to the downwind wall of the building. The weaker the wind speed, the narrower fire spread around the ignition point, but the higher the flame above the building reaches. When the ignition point was located on the downwind wall of the building, the flame didn't spread to the upwind wall of the building. The results showed that wind speed and direction were important for the flow and temperature (or flame) distribution around a firing building.
Keywords
GIS; CFD model; building fire; fire spreading; flow distribution;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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