Effect of Gravity on Flame Structure of Small-Scale Pool Fires

Abstract

The height of the pool fire depends on the amount of heat feedback from the flame to the fuel. In order to predict flame height in a partial gravity environment, we investigated the heat feedback amount of a small pool flame experimentally under normal to partial gravity conditions; using the drop tower at Hirosaki University in Japan to obtain arbitrary partial gravity condition, which varied from 1 G to 0.55 G. We performed the measurement of the flame shape with a digital camera. Based on the experiment result, we expected the amount of fuel vapor from the amount of heat feedback of the pool flame calculated and to establish the prediction formula of the flame height in the partial gravity environment.