Controlled atomization using a twin-fluid swirl atomizer

Karnawat, J.; Kushari, Abhijit

doi:10.1007/s00348-006-0191-0

Cited by 26 publications

(16 citation statements)

References 7 publications

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“…Twin-fluid atomizers provide easy and independent control of the individual spray parameters (Karnawat and Kushari, 2006). The consumption of atomizing gas is lower than with their externally mixed counterparts.…”

Section: Introductionmentioning

confidence: 99%

Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size

Mlkvik

Stähle

Schuchmann

et al. 2015

International Journal of Multiphase Flow

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Section: Introductionmentioning

confidence: 99%

Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size

Mlkvik

Stähle

Schuchmann

et al. 2015

International Journal of Multiphase Flow

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“…These atomizers were selected in order to have a control over the atomization process by changing the water and compressed air feed conditions [19,20]. Eight internally mixed atomizers, at equal distances of 61 mm were installed on a circular ring having diameter of 1.63 meter, located at the centre of the room at a height…”

Section: Methodsmentioning

confidence: 99%

Suppression of Pool Fire in a Large Enclosure with Water Mist

Lal

Gupta

Kushari

et al. 2013

International Journal of Spray and Combustion Dynamics

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This paper reports the results of an experimental study of suppression of pool fires in enclosed spaces using water mist. The main objective of the present study is to understand the mechanisms responsible for the suppression of pool fires using water mists. Experiments were conducted in a large compartment with n-heptane pool fires of different heat release rates. The temperature variations in the compartment were measured using K-type thermocouples fixed at two locations. A multi gas analyzer was used to measure gas concentrations. The test results indicate that the water mist suppresses the diffusion flame in an enclosed space mainly through evaporating cooling and oxygen displacement by water vapors, resulting in inefficient combustion. The fire suppression time decreases with a decrease in droplet diameter. It is much easier to suppress a larger fire due to faster rates of evaporation of water droplets and therefore, the total mist requirement decreases with an increase in the fire size. The results of this study can find application in the design of water mist based fire fighting systems for indoor fires. Keywords

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“…In this paper, a 2-D PIV method is applied to measure the instantaneous and average velocity field of a spray flow produced by a variety of input conditions, specifically the air to liquid mass flow ratio (ALR). It can be seen in the work of Karnawat and Kushari [1] that the variation of the ALR can make large changes in the spray cone angle, solidity, break up distance, and Sauter Mean Diameter (SMD). Thus, it can be assumed that changing the ALR will change the velocity profile of the spray flow.…”

Section: Introductionmentioning

confidence: 97%

An Experimental Investigation on the Spray Flows Exhausted from a Counter-swirling Air-blast Nozzle

Dvorak

Peck

2012

28th Aerodynamic Measurement Technology, Ground Testing, and Flight Testing Conference

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The velocity field for a spray produced by an air-blast atomizer is measured using Particle Image Velocimetry (PIV). These measurements are conducted at a variety of input liquid and air mass flow rates producing many different air to liquid mass flow ratios (ALR). The experiment is repeated with two different liquids, water and a hydrocarbon based fuel substitute. It is found that the velocity field depends heavily on the type of fluid used as opposed to the ALR. Finally the PIV results are compared to Laser Doppler Velocimetry (LDV) results. It is seen that that the results from the two different techniques are not well correlated.

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Controlled atomization using a twin-fluid swirl atomizer

Cited by 26 publications

References 7 publications

Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size

Twin-fluid atomization of viscous liquids: The effect of atomizer construction on breakup process, spray stability and droplet size

Suppression of Pool Fire in a Large Enclosure with Water Mist

An Experimental Investigation on the Spray Flows Exhausted from a Counter-swirling Air-blast Nozzle

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