AM05-19-010 モデル街区における火災延焼シミュレーション(燃焼・反応流のモデリングと制御2,一般講演)

概要

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Research into fire spread dynamics in metropolitan areas under certain meteorological conditions is of critical importance to fire safety issues. In previous studies, extensive investigation has been undertaken into both the theory of fire and mathematical modeling to describe fire phenomena, with particular success in simulating small-scale fires, such as indoor or compartmental fires. However, the reproduction of urban fires still remains a tremendous challenge. The objective of this paper is to introduce an approach involving a coupled simulation method for the prediction of urban fire growth and spread by combining a one-dimensional wood pyrolysis model with computational fluid dynamics (CFD). The behaviors of fire growth and spread in urban areas can be divided into two stages superficially; one is pyrolysis and combustion of a single solid block, while the other is spread due to heat transfer between nearby buildings. At each stage, a wood pyrolysis model by Kung and a widely used CFD code have been adopted for solution of fire performance. In this paper, the coupled simulation method approached is implemented on a trial case and the calculation result is presented.
日本流体力学会の論文
2005-09-05