An Experimental Study on the Interaction of Water Mist with Vertical/Horizontal Spray Flame

Spray fire is a major disaster for gas turbines and aero-engine test facilities. Previous studies demonstrated that small spray fires were difficult to extinguish with water mist. An experimental study of the process of water mist interacting with the small size spray fire was conducted in an open space. Studies on suppression of vertical spray fire and horizontal spray fire were carried out, respectively. Experiment discovered that a horizontal fame was more difficult to extinguish compared with the vertical using the same scenario, and implied that the coupling the dilution of fuel in the gas phase with the reduction of radiant feedback plays a predominant role in fire extinguishment.