Free-surface liquid jet impingement on rib patterned superhydrophobic surfaces

2011 ◽  
Vol 23 (5) ◽  
pp. 052104 ◽  
Author(s):  
D. Maynes ◽  
M. Johnson ◽  
B. W. Webb
Keyword(s):  
Free Surface ◽  
Jet Impingement ◽  
Superhydrophobic Surfaces ◽  
Liquid Jet ◽  
Surface Liquid

Experimental and numerical study of inclined free surface liquid jet impingement

2020 ◽  
Vol 154 ◽  
pp. 106389 ◽  
Author(s):  
Kuldeep Baghel ◽  
Arunkumar Sridharan ◽  
Janani Srree Murallidharan
Keyword(s):  
Free Surface ◽  
Numerical Study ◽  
Jet Impingement ◽  
Liquid Jet ◽  
Surface Liquid

scholarly journals Conjugated Heat Transfer on a Horizontal Surface Impinged by Circular Free-Surface Liquid Jet.

2002 ◽  
Vol 45 (2) ◽  
pp. 307-314 ◽  
Author(s):  
Yaohua ZHAO ◽  
Takashi MASUOKA ◽  
Takaharu TSURUTA ◽  
Chong-Fang MA
Keyword(s):  
Heat Transfer ◽  
Free Surface ◽  
Horizontal Surface ◽  
Liquid Jet ◽  
Conjugated Heat Transfer ◽  
Surface Liquid

scholarly journals Liquid Jet Impingement Normal to a Disk in Zero Gravity

1978 ◽  
Vol 100 (2) ◽  
pp. 204-209 ◽  
Author(s):  
T. L. Labus ◽  
K. J. DeWitt
Keyword(s):  
Free Surface ◽  
Jet Impingement ◽  
Analytical Investigation ◽  
Liquid Jet ◽  
Zero Gravity ◽  
Inertial Forces ◽  
Flow Equations ◽  
Viscous Forces ◽  
Circular Jets ◽  
Order Of Magnitude

An experimental and analytical investigation was conducted to determine the free surface shapes of circular jets impinging normal to sharp-edged disks in zero gravity. Experiments conducted in a zero gravity drop tower yielded three distinct flow patterns which were classified in terms of the relative effects of surface tension and inertial forces. An order of magnitude analysis was conducted indicating regions where viscous forces were not significant when computing free surface shapes. The free surface analysis was simplified by transforming the governing potential flow equations and boundary conditions into the inverse plane. The resulting nonlinear equations were solved numerically and comparisons were made with the experimental data for the inertia dominated regime.

scholarly journals Numerical Simulation of a Radial Free Surface Liquid Jet Impinging on a Heated Surface

2021 ◽  
Author(s):  
Alok Khaware ◽  
Likitha S. Siddanathi ◽  
Patrick Sharkey ◽  
Amine Ben Hadj Ali ◽  
Vinay K. Gupta
Keyword(s):  
Numerical Simulation ◽  
Free Surface ◽  
Heated Surface ◽  
Liquid Jet ◽  
Surface Liquid

Pressure Drop in Generating Free-Surface Liquid Microjet Array From Short Cylindrical Orifices

2011 ◽  
Vol 133 (6) ◽  
Author(s):  
Avijit Bhunia ◽  
C. L. Chen
Keyword(s):  
Free Surface ◽  
Pressure Drop ◽  
Functional Dependence ◽  
High Heat ◽  
Current Data ◽  
Nonlinear Dependence ◽  
Liquid Jet ◽  
High Heat Flux ◽  
Research Attention ◽  
Surface Liquid

Liquid microjet arrays have received a lot of research attention in recent years due to its high heat flux cooling capability. The microjets are generated from a jet head cavity with a liquid inlet port on one wall and an array of micro-orifices on another wall. An important, yet relatively less studied aspect of the topic is the pressure (also frequently referred to as the pressure drop) necessary to generate the jets and maintain certain jet velocity. In this study we investigate the pressure drop for17 different array patterns of liquid jet issuing in a surrounding gas (air) medium, i.e., a free surface liquid jet. The number of jets varies from 1 to 126, while the jet diameter ranges from 99 to 208 μm. The current results show more than 200% deviation from the existing correlations in the literature. Through a systematic experimental study we identify the functional dependence of pressure drop on the various geometric parameters. The results uncover the reasons behind the widespread disagreement between the current data and the existing correlations. Pressure drop shows a weak, nonlinear dependence on the orifice wall thickness, compared to the linear dependence used in the existing correlations. Furthermore, the depth of the jet head cavity is shown to be an important parameter dictating pressure drop, unlike the previous studies that inherently assume the cavity to be an infinite reservoir. A new dimensionless pressure drop parameter is proposed and its variation with the jet Reynolds number is correlated. The new correlation predicts all the experimental data within a ± 10% range.

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