An Experimental and Computational Study of Interaction between Water Mist and Gas Jet Flame

Abstract:

The experiment on gas jet flame extinguishing with water mist in open space was conducted in this paper. On the basis of experimental result, the process of the flame extinguishment can be classified into two categories:1) when fuel flow rate is small, the gas jet flame can be suppressed and extinguished quickly; 2) When fuel flow is large, the flame lifts from the attached position at the burner exit after suppressed by the water mist. FLUENT is used to simulate the interaction of water mist with gas jet flame. The Eddy-dissipation model (EDM) is used for combustion of flame. the water mist is simulated by Discrete Phase Model (DPM).The simulated results agree well with the experimental results. To some extent, EDM is suitable for simulating the interaction of water mist with a turbulent gas jet flame.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1720-1724
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1720
• Online since: October 2011
• Authors: Xian Jia Huang, Xi Shi Wang, Jia Lu, Zhong Jun Ding, Guan Xuan Liao
• Keywords: Extinguishment, Fire Suppression, Gas Jet Flame, Numerical Simulation, Water Mist

References

[1] Zhigang Liu, Andrew K. Kim. A review of water mist fire suppression systems-fundamental studies. J of Fire Protection Engineering. Vol. 10(1999), 32-50.

DOI: 10.1177/104239159901000303

[2] Hoffmann NA, Galea ER. An extension of the fire-field modeling technique to include fire-sprinkler interaction-I. Tmathematical basis. Int J Heat Mass Transfer. Vol. 36(1993), 1435-44.

DOI: 10.1016/s0017-9310(05)80054-7

[3] Hoffmann NA, Galea ER. An extension of the fire-field modeling technique to include fire-sprinkler interaction-II. The simulation. Int J Heat Mass Transfer. Vol. 36(1993), 1445-57.

DOI: 10.1016/s0017-9310(05)80055-9

[4] Novozhilov V, Harvie DJE, Kent JH. A computational fluid dynamics study of wood fire extinguishment by a water spray. Fire Saf J. Vol. 29(1997), 259-82.

DOI: 10.1016/s0379-7112(97)00027-1

[5] Novozhilov V, Moghtaderi B, Kent JH, Fletcher DF. Solid fire extinguishment by a water spray. Fire Saf J. Vol. 32(1999)119-35.

DOI: 10.1016/s0379-7112(98)00036-8

[6] Spalding D.B., Mixing and chemical reaction in steady state confined turbulent flames. In 13th Int. Symp. On Combustion. The Combustion Institute, Pittsburgh PA, 1971, pp.649-57.

DOI: 10.1016/s0082-0784(71)80067-x

[7] Jingsong Hua, Kurichi Kumar, Boo Cheong Khoo, Hong Xue. A numerical study of the interaction of water spray with a fire plume. Vol. 37(2002), 631-657.

DOI: 10.1016/s0379-7112(02)00026-7

[8] Westbrook CK, Dryer FL. Combust Sci Technol vol. 27(1981), 31-34.

[9] Fluent user's guide vols. 1-4. Fluent Incorporated, Central Resource Park, 10 Cavendish Court, Lebanon, NH 03766, 1998-(2004).

[10] Magnussen B.F. On mathematical modeling of turbulent combustion with special emphasis on soot formation and combustion. 16th symposium(Int. ) on combustion, p.719, (1976).

DOI: 10.1016/s0082-0784(77)80366-4