Interaction of dispersed water with flame

Alekhanov, Yu. V.; Bliznetsov, M. V.; Vlasov, Yu. A.; Dudin, V. I.; Levushov, A. E.; Logvinov, A. I.; Lomtev, S. A.; Meshkov, E. E.

doi:10.1134/1.1565638

Cited by 11 publications

(3 citation statements)

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“…At present, there are various methods of fire extinguishing by spraying water [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. The main direct factor in this extinguishing method is a temperature decrease in the combustion zone due to evaporation of dispersed water.…”

Section: Introductionmentioning

confidence: 99%

Fire suppression by aerosols of aqueous solutions of salts

Коробейничев

Шмаков

Чернов

et al. 2010

Combust Explos Shock Waves

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Results of laboratory experiments were verified by full-scale tests in which twotypes of model fire sources were extinguished by salt-solution aerosols. The tests showed that short-term action of an aerosol cloud of an aqueous solution of potassium ferricyanide K 3 [Fe(CN) 6 ] on the flame front of a surface forest fire led to suppression of the gas-phase combustion, and in the case of a model fire source of class A (burning wood) to its complete extinction. The minimum extinguishing mass concentration of K 3 [Fe(CN) 6 ] in these experiments -4.5 g/m 3 -is close to that measured earlier in laboratory experiments. It was found that, in fire suppression by an aerosol of the aqueous solution of K 3 [Fe(CN) 6 ], the volumetric flow rate of this fire suppressant was 30 times lower than the standard flow rate of pure water from a fire hose.

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Section: Introductionmentioning

confidence: 99%

Fire suppression by aerosols of aqueous solutions of salts

Коробейничев

Шмаков

Чернов

et al. 2010

Combust Explos Shock Waves

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“…Tests and optimization of the methods for producing air-water mixtures and their fire suppression applications using full-scale devices are rather expensive. In this connection, it is of interest to develop laboratory methods for studying the physical processes of flame suppression by dispersed water [9]. Results of experiments using these methods can become a basis for the development of computational and theoretical fire suppression models.…”

Section: Introductionmentioning

confidence: 99%

Method for Studying the Interaction of Dispersed Water with Flame

Alekhanov

Bliznetsov

Vlasov

et al. 2006

Combust Explos Shock Waves

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“…The results of these experiments (in particular, [1]) can be used for pre dicting typical conditions for deceleration of drops in the counter flow of gases and their subsequent entrain ment in the direction opposite to the initial motion. These processes are important for various technologies using gases at high, moderate, and low temperatures (in particular, [11][12][13][14][15][16][17]). However, experimental results [1][2][3] have not been generalized in the form of criterion expressions characterizing the conditions of deceleration and possible subsequent entrainment of drops by a high temperature gas flow.…”

Section: Introductionmentioning

confidence: 99%

Criterion expressions for conditions and deceleration and subsequent entrainment of water drops by high-temperature gases

Волков

Кузнецов

2015

Tech. Phys.

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On the basis of the results of experimental investigation of motion of water drops (from 50 to 500 μm in size) through high temperature (about 1100 K) gases, we determine the conditions (in the form of criterion expressions) for deceleration of these drops and their entrainment by gases moving in the opposite direction. We introduce the Reynolds numbers of the dispersed and carrier phases as the characteristics of the given process. Optical particle image velocimetry (PIV) and interferometric particle imaging (IPI) methods, cross correlation video complex with a pulsed laser, and a high speed (10 5 frames per second) video camera are used. The initial velocities of the counter motion of water drops and gases are varied in ranges typical of many applications (0.5-5.0 and 0.5-2.5 m/s, respectively). The possibility of predictive simulation of drop deceleration conditions based in a relatively simple model of interaction of solitary elements of the disperse phase and high temperature gases is demonstrated.

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Interaction of dispersed water with flame

Cited by 11 publications

References 0 publications

Fire suppression by aerosols of aqueous solutions of salts

Fire suppression by aerosols of aqueous solutions of salts

Method for Studying the Interaction of Dispersed Water with Flame

Criterion expressions for conditions and deceleration and subsequent entrainment of water drops by high-temperature gases

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