A Study on Generation and Development Mechanisms of Fire Whirls Part 1 Experimental Analysis using the Reductive Scale Model

"Fire Whirl" is a unique phenomenon that occurs in large-scale fires and causes catastrophic damage when it occurs in urban areas.[1, 2] Considerable experimental and theoretical research has been conducted on the basis of past fire whirl disasters in order to clarify the mechanism that causes fire whirls.[3, 5] However, it is difficult to define the generation mechanism and the characteristics of fire whirls, since they are often caused by and associated with various contingencies, such as weather conditions. Therefore, an experiment was conducted for the purpose of understanding the qualitative and quantitative aspects of the generation mechanism and the characteristics of fire whirls. The first step of this experiment involved assembling a scale model, and the experiment was reproduced by CFD model.