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FDS를 이용한 목재 기둥 화염 전파에 대한 수치 모사
권경남(Kyeongnam Kwon),임성균(Seongkyun Im) 한국연소학회 2021 KOSCOSYMPOSIUM논문집 Vol.2021 No.11
Flame spread over a wooden dowel array is numerically analyzed to validate the applicability of simulation on a study and discover the fundamental mechanism of wildland fire by using FDS. The shape of flame spread varies, namely continuous, discrete, or quenching, based on spacing distances and wind speeds. The wind promotes mixing between combustion products and the cold ambient air for high wind speeds, leading to convective cooling. The flame is exposed to the cold ambient air for a large distance before reaching the next dowel, and the increased distance reduces conductive and radiative heat transfer to the next dowel for ignition. The simulation results show a similar tendency of the flame shape for varied spacing and wind speeds to a previous experimental study.