Prediction of postcontact parameters of fluid droplet impact on a smooth surface

Brett F BATHEL; Neena STEPHEN; Lukas JOHNSON; Albert RATNER; Michael HUISENGA

doi:10.2514/1.24553

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Prediction of postcontact parameters of fluid droplet impact on a smooth surface

Journal article

Peer reviewed

Prediction of postcontact parameters of fluid droplet impact on a smooth surface

Brett F BATHEL, Neena STEPHEN, Lukas JOHNSON, Albert RATNER and Michael HUISENGA

AIAA journal, Vol.45(7), pp.1725-1733

2007

DOI: 10.2514/1.24553

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Abstract

iquid drop impact, spread, and surface coating is critical in wing icing, combustor liner cooling, and other aerospace applications. This study reports an investigation of droplet impact on a smooth quartz surface and formulates new data correlations with extensive error assessment. Several previous models were compared with the experimentally obtained results for droplet maximum spread over a wide range: 1) impact speeds (1.2 < V < 3.1 m/s), 2) initial droplet diameter (2.7 < D < 4.0 mm), and 3) Reynolds and Weber numbers (4500 < Re < 13,700 and 80 < We < 510). Droplet images were collected using a high-speed digital camera recording at ∼2500 frames per second with an image plane spatial resolution of ∼16 /im. Based on the large amount of data collected, a statistical analysis was performed to account for error contribution in model prediction and to determine experimental repeatability. Relative mean error in model prediction ranged from 81.3 to 4.0%. Comparison of maximum spread time models with experimental spread times was also made and an improved model that decreases error by a factor of 2 is presented.

Fluid Dynamics

Physics

Drops and bubbles

Fundamental areas of phenomenology (including applications)

Wetting

Exact sciences and technology

Nonhomogeneous flows

Condensed matter: structure, mechanical and thermal properties

Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties)

Solid-fluid interfaces

Details

Title: Subtitle: Prediction of postcontact parameters of fluid droplet impact on a smooth surface
Creators: Brett F BATHEL - University of Iowa, Iowa City, Iowa 52242, United States
Neena STEPHEN - University of Iowa, Iowa City, Iowa 52242, United States
Lukas JOHNSON - University of Iowa, Iowa City, Iowa 52242, United States
Albert RATNER - University of Iowa, Iowa City, Iowa 52242, United States
Michael HUISENGA - Iowa State University, Ames, Iowa 50011, United States
Resource Type: Journal article
Publication Details: AIAA journal, Vol.45(7), pp.1725-1733
Publisher: American Institute of Aeronautics and Astronautics; Reston, VA
DOI: 10.2514/1.24553
ISSN: 0001-1452
eISSN: 1533-385X
Language: English
Date published: 2007
Academic Unit: Mechanical Engineering
Record Identifier: 9984064557502771

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