DROPLET FORMATION FROM A THIN HOLLOW LIQUID JET WITH A CORE AIR FLOW

Chul Jin Choi; Sang Yong Lee

doi:10.1615/atomizspr.v15.i5.10

DROPLET FORMATION FROM A THIN HOLLOW LIQUID JET WITH A CORE AIR FLOW

Atomization and Sprays ◽

10.1615/atomizspr.v15.i5.10 ◽

2005 ◽

Vol 15 (5) ◽

pp. 469-488 ◽

Cited By ~ 6

Author(s):

Chul Jin Choi ◽

Sang Yong Lee

Keyword(s):

Air Flow ◽

Droplet Formation ◽

Liquid Jet

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DROPLET FORMATION FROM A THIN HOLLOW LIQUID JET WITH A CORE AIR FLOW

Atomization and Sprays ◽

10.1615/atomizspr.v15.i4.80 ◽

2005 ◽

Vol 15 (4) ◽

pp. 469-488 ◽

Cited By ~ 1

Author(s):

Chul Jin Choi ◽

Sang Yong Lee

Keyword(s):

Air Flow ◽

Droplet Formation ◽

Liquid Jet

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DETECTION OF AERODYNAMIC EFFECTS IN LIQUID JET BREAKUP AND DROPLET FORMATION

Atomization and Sprays ◽

10.1615/atomizspr.v9.i4.10 ◽

1999 ◽

Vol 9 (4) ◽

pp. 331-342 ◽

Cited By ~ 7

Author(s):

Michael P. Moses ◽

Steven H. Collicott ◽

Stephen D. Heister

Keyword(s):

Droplet Formation ◽

Liquid Jet ◽

Jet Breakup

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Characteristics of Disturbances and Droplet Formation of a Round Water Jet with an Annular Air Flow.

KAGAKU KOGAKU RONBUNSHU ◽

10.1252/kakoronbunshu.27.636 ◽

2001 ◽

Vol 27 (5) ◽

pp. 636-641

Author(s):

Yoshio Morozumi ◽

Jun Fukai ◽

Osamu Miyatake

Keyword(s):

Air Flow ◽

Droplet Formation ◽

Water Jet

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Effect of Cross-Flow Swirl on the Trajectory of Spray in an Annular Passage

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.4049378 ◽

2020 ◽

Author(s):

Tushar Sikroria ◽

Abhijit Kushari

Keyword(s):

Momentum Flux ◽

High Speed ◽

Air Flow ◽

Cross Flow ◽

Flux Ratio ◽

Liquid Jet ◽

Swirl Number ◽

Flow Swirl ◽

Air Stream ◽

The Impact

Abstract This paper presents the experimental analysis of the impact of swirl number of cross-flowing air stream on liquid jet spray trajectory at a fixed air flow velocity of 42 m/s with the corresponding Mach number of 0.12. The experiments were conducted for 4 different swirl numbers (0, 0.2, 0.42 and 0.73) using swirl vanes at air inlet having angles of 0°, 15°, 30° and 45° respectively. Liquid to air momentum flux ratio (q) was varied from 5 to 25. High speed (@ 500 fps) images of the spray were captured and those images were processed using MATLAB to obtain the path of the spray at various momentum flux ratios. The results show interesting trends for the spray trajectory and the jet spread in swirling air flow. High swirling flows not only lead to spray with lower radial penetration due to sharp bending and disintegration of liquid jet, but also result in spray with high jet spread and spray area. Based on the results, correlations for the spray path have been proposed which incorporates the effects of the swirl number of the air flow.

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The nonlinear capillary instability of a liquid jet. Part 2. Experiments on jet behaviour before droplet formation

Journal of Fluid Mechanics ◽

10.1017/s002211208000211x ◽

1980 ◽

Vol 96 (2) ◽

pp. 275-286 ◽

Cited By ~ 79

Author(s):

K. C. Chaudhary ◽

T. Maxworthy

Keyword(s):

Experimental Model ◽

Linear Growth ◽

Input Voltage ◽

Droplet Formation ◽

Minimum Time ◽

Small Hole ◽

Liquid Jet ◽

Velocity Perturbation ◽

Unique Minimum ◽

Experimental Parameters

The behaviour of a perturbed capillary jet is experimentally determined by studying the jet from the time it emerges from a small hole to the point at which individual droplets of fluid begin to form. Under any particular set of externally applied experimental parameters, i.e. jet velocity, disturbance wavenumber and amplitude, there is a unique, minimum time to this breakup into drops. This characteristic is needed to relate the magnitude of the input voltage to the modulating device and the output velocity perturbation that it produces. Using this relationship we then compare the experimentally produced profiles of jet shape to corresponding ones calculated by using the theory of Chaudhary & Redekopp (1980). The agreement is satisfactory, especially for small values of input voltage. Then, in the neighbourhood of the cutoff wavenumber, we show that the predicted linear growth of the jet profile is also reproduced in the experimental model.

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