An Experimental Study on the Ventilation Velocity of the Variattion

In this study, the 1/20 reduced-scale experiments using Froude scaling were conducted to investigate the ventilation velocity of the variation of burning rate in tunnel fires. The heptane square pool fire with heat release rate ranging from 3.71～15.6 kW were used. The burning rate of fuel was obtained by measuring mass using load cell and temperature distributions were measured by K-type theomocouples in order to investigate smoke movement. The ventilation velocity in the tested tunnel was controlled by inverter of the wind tunnel. In heptane pool fire case, the increase in ventilation velocity incresed the burning rate due to the direct supply of oxygen to the fire plume. For the same dimensionless velocity(), burning rate increased as the size of pool fire decreased.

keywords: 터널화재, Froude 축소, 배연속도, 연소율, 헵탄 풀화재, Tunnel fire, Froude scaling, Ventilation velocity, Burning rate, Heptane pool fire

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Article Contents

Vol.7 No.2

An Experimental Study on the Ventilation Velocity of the Variattion

Abstract

Reference

(사)한국터널지하공간학회