NDLI: A study of droplet impact on static films using the BB-LIF technique

Content Provider	Springer Nature Link
Author	Hann, D. B. Cherdantsev, A. V. Mitchell, A. McCarthy, I. N. Hewakandamby, B. N. Simmons, K.
Copyright Year	2016
Abstract	This paper presents results of single droplet impacts on films of different heights taken using the brightness-based laser-induced fluorescence technique (BB-LIF). The dynamics of drop impingement such as the shape of the cavity and residual film thickness are investigated and analysed with a time resolution of 0.1 ms and spatial resolution of 70 μm. Additionally, a variation of the BB-LIF technique is used to investigate the change in profile of the droplet liquid during the inertial self-similar regime. The results of the analysis show that present models predicting initial development of the cavity show good agreement. Suggested amendments for some of the constants for cavity width and residual film thickness are proposed based on the film thickness that fit better with published data. The development of the profile of the droplet liquid demonstrates that for thin liquid films, the droplet liquid behaviour with strong similarity to droplet impacts on dry solid surfaces. It is noted that for some of the measured parameters, the use of the film height as the length scale gives a better fit.
Starting Page	1
Ending Page	12
Page Count	12
File Format	PDF
ISSN	07234864
Journal	Experiments in Fluids
Volume Number	57
Issue Number	4
e-ISSN	14321114
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-03-16
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Fluid Dynamics Fluid- and Aerodynamics Engineering Thermodynamics, Heat and Mass Transfer
Content Type	Text
Resource Type	Article
Subject	Fluid Flow and Transfer Processes Physics and Astronomy Mechanics of Materials Computational Mechanics

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