Experimental investigation of the velocity field of a laboratory fire whirl

ORAL

Abstract

A fire whirl is a swirling diffusion flame that may occur to great destructive effect in urban fires or wildfires. To study fire whirls in the laboratory, we use a burner flame supplied with DME, and induce swirl by entraining air through a split cylinder surrounding the central flame. Stereo Particle Image Velocimetry (PIV) is used to obtain distributions of the three components of velocity inside and outside the fire whirl core. The effects of heat release rate and gap size on whirl height, circulation, and air entrainment are examined, and scaling behavior is discussed.

–

Authors

  • Katherine Hartl

    Princeton University

  • Pengfei Wang

    University of Science and Technology of China

  • Alexander Smits

    Princeton University, Monash University, Princeton University, Princeton University and Monash University, Princeton University; Monash University, Princeton University, Monash Universty