Experimental study on restraining flame of gas burning by ultra-fine water mist
Abstract：By building a small size experimental platform of simulation working face,using the gas range after reconstruction as gas burner,the study was taking on the changing process of the flammable premixed flame in ultra-fine water mist and measured the flame temperature.By changing the ventilation speed and the atomizing rate for ultra-fine water mist,the study could reveal the rule of the flammable premixed flame temperature variation in the ultra-fine water mist.By establishing the force balance and speed balance on the stable flame and analyzing the flame shape tensile distortion,it is found that the force and speed balance is destroyed on the surface layer between outer flame and heat layer.Under the same conditions,after joining the ultra-fine water mist in the simulate working face,the flow field disturbances increased obviously around flame in comparison with the only ventilated condition,and the flame temperature changes increased amplitude and frequency.In the conditions of mist concentration,the greater ventilated speed is,the stronger mixed gas is disturbed,the change of the temperature is greater,flame is more unstable.Experimental results show that ultra-fine water mist can restrain gas flame combustion.
Keywords：ultra-fine water mistgas burningpremixed flameflame temperature
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：8( 249-256 )