The Effect of an Alcohol Resistant Aqueous Film Forming Foam (AR-AFFF) on the Evaporation, Boiling, and Collision Dynamics of a Water Droplet on a Heated Solid Surface

Manzello, Samuel L.; Yang, Jiann C.

doi:10.1006/jcis.2002.8605

Cited by 11 publications

(4 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to analyze the influencing factors on evaporation rate, G 1 can be expressed as Equation (4).…”

Section: Fire Suppression Mechanism Of Afff In Diesel Pool Firementioning

confidence: 99%

“…In the past few decades, many efforts have focused on the influence of foam components, the foam fire-fighting system and oil film interaction on the film-foam property, foam stability, spreading behavior and fire-extinguishing performance of AFFF in oil fires [3][4][5][6]. Sheng et al [7,8] investigated the fire suppression behavior of foam extinguishing agents with various components, and found that the AFFF containing fluorocarbon surfactants could diffuse faster on the surface of the fuel [7,8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires

Yan

Wang

Zheng

et al. 2023

Fire

View full text Add to dashboard Cite

A compressed-gas fire extinguishing experiment was carried out to analyze the impact of gas-liquid flow ratio, liquid flow rate and driving pressure on the fire suppression efficiency of aqueous film-forming foam (AFFF) in a diesel pool fire, and a possible fire-extinguishing mechanism was proposed. A fire suppression test showed that AFFF at a gas-liquid flow ratio of 16 between the range of 5 to 24 had the fastest fire-extinguishing temperature drop rate (16.67 °C/s), the shortest fire-extinguishing time, of 42 s, and the lowest foam solution consumption of 230 g, exhibiting the best fire suppression performance. Meanwhile, the fire suppression efficiency of AFFF improved with the augmentation of either liquid flow rate or system driving pressure. Based on fluid mechanics and combustion science, a foam fire-extinguishing mechanism was proposed to explain the influence of system parameters such as gas-liquid ratio, liquid flow rate and driving pressure on key combustion parameters such as temperature drop rate, evaporation rate and combustion rate, which can better illustrate the change in fire extinguishing performance.

show abstract

“…In order to analyze the influencing factors on evaporation rate, G 1 can be expressed as Equation (4).…”

Section: Fire Suppression Mechanism Of Afff In Diesel Pool Firementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires

Yan

Wang

Zheng

et al. 2023

Fire

View full text Add to dashboard Cite

show abstract

“…They can not only cause a large number of casualties, but also bring heavy financial losses and environmental pollution 4 . Many fire‐fighting events have proved that foam extinguishing agents are crucial method for the extinguishment of flammable oil fires 5–10 . Thermal stability performance and heat insulation characteristics are critical indicators to evaluate the efficiency of the fire extinguishing foams 11,12 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the quantitative evaluation of the thermal stability performance and heat insulation characteristics of fire‐fighting foam

Wang,

Jiang,

Yang

et al. 2023

Fire and Materials

View full text Add to dashboard Cite

Foam extinguishing agents are crucial for the suppression of flammable liquid fires. Their thermal stability performance and heat insulation characteristics are critical indicators to evaluate the efficiency of the fire‐fighting foam. There have been some studies focused on exploring the behavior of fire‐fighting foams exposed to radiant heating. However, the decay mechanisms and heat transfer behaviors of the foam at the micro‐scale are still unclear and require further clarification. Therefore, in this study, the volume reduction coefficient, falling time of foam column height, and the temperature profiles of the foam layer under the thermal radiation environment of different conditions are discussed. The results indicate that the high temperature generated by the radiative heat flux will accelerate the collapse rate of the foam layer. The stability of the foam structure will be seriously damaged. There is a relationship between heat radiation intensity and foam attenuation coefficient. The empirical model for reflecting the fire‐fighting foam collapse process under the fire environment with high heat radiation flux is modified. Moreover, the average collapse rate and temperature difference gradient are used to characterize the thermal stability performance and heat insulation characteristics of the foam. Analysis of the micro‐scale foam structure parameters from the foam scans has revealed that the thermal stability performance and heat insulation characteristics of the foam are stronger when the surface tension of the foam is within the range of 17.4–20.4 mN/m.

show abstract

“…The collision dynamics of the impinging droplet can be vastly different for liquid and solid surfaces [2]. The fluid mechanics of droplet collision with a solid surface has been studied under a variety of conditions [3][4][5][6][7][8][9][10][11][12][13]. Droplet collision with liquid surfaces has been studied in some detail as well [14][15][16][17][18][19][20][21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

An experimental investigation of water droplet impingement on a heated wax surface

Manzello

Yang

2004

International Journal of Heat and Mass Transfer

Self Cite

View full text Add to dashboard Cite

The Effect of an Alcohol Resistant Aqueous Film Forming Foam (AR-AFFF) on the Evaporation, Boiling, and Collision Dynamics of a Water Droplet on a Heated Solid Surface

Cited by 11 publications

References 26 publications

Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires

Comparative Study of the Suppression Behavior and Fire-Extinguishing Mechanism of Compressed-Gas Aqueous Film-Forming Foam in Diesel Pool Fires

Experimental study on the quantitative evaluation of the thermal stability performance and heat insulation characteristics of fire‐fighting foam

An experimental investigation of water droplet impingement on a heated wax surface

Contact Info

Product

Resources

About