Regular waves on vertical falling rivulets at different wetting contact angles

Abstract

Results of experimental investigation of regular wave conditions for straight rivulets falling down a vertical plane are presented. Field measurements of the local thickness of rivulets were carried out with the help of laser-induced fluorescence. Data on the wave structure of rivulets is shown in a wide range of frequencies of regular waves for different Reynolds numbers of the flow and contact wetting angles. It was observed for all studied wave conditions that transverse width of rivulets and wetting angles are insensitive to the phase of propagating waves. Moreover, it was found that the wave structure of rivulets differs significantly for the cases of low and high values of the contact angle.

Original language	English
Pages (from-to)	345-357
Number of pages	13
Journal	Thermophysics and Aeromechanics
Volume	17
Issue number	3
DOIs	https://doi.org/10.1134/S0869864310030054
Publication status	Published - 1 Dec 2010
Externally published	Yes

Keywords

contact wetting angle
laser-induced fluorescence
regular waves
rivulet

ASJC Scopus subject areas

Radiation
Nuclear and High Energy Physics

Access to Document

10.1134/S0869864310030054

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title = "Regular waves on vertical falling rivulets at different wetting contact angles",

abstract = "Results of experimental investigation of regular wave conditions for straight rivulets falling down a vertical plane are presented. Field measurements of the local thickness of rivulets were carried out with the help of laser-induced fluorescence. Data on the wave structure of rivulets is shown in a wide range of frequencies of regular waves for different Reynolds numbers of the flow and contact wetting angles. It was observed for all studied wave conditions that transverse width of rivulets and wetting angles are insensitive to the phase of propagating waves. Moreover, it was found that the wave structure of rivulets differs significantly for the cases of low and high values of the contact angle.",

keywords = "contact wetting angle, laser-induced fluorescence, regular waves, rivulet",

author = "Alekseenko, {S. V.} and Bobylev, {A. V.} and Guzanov, {V. V.} and Markovich, {D. M.} and Kharlamov, {S. M.}",

year = "2010",

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language = "English",

volume = "17",

pages = "345--357",

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publisher = "Maik Nauka-Interperiodica Publishing",

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TY - JOUR

T1 - Regular waves on vertical falling rivulets at different wetting contact angles

AU - Alekseenko, S. V.

AU - Bobylev, A. V.

AU - Guzanov, V. V.

AU - Markovich, D. M.

AU - Kharlamov, S. M.

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Results of experimental investigation of regular wave conditions for straight rivulets falling down a vertical plane are presented. Field measurements of the local thickness of rivulets were carried out with the help of laser-induced fluorescence. Data on the wave structure of rivulets is shown in a wide range of frequencies of regular waves for different Reynolds numbers of the flow and contact wetting angles. It was observed for all studied wave conditions that transverse width of rivulets and wetting angles are insensitive to the phase of propagating waves. Moreover, it was found that the wave structure of rivulets differs significantly for the cases of low and high values of the contact angle.

AB - Results of experimental investigation of regular wave conditions for straight rivulets falling down a vertical plane are presented. Field measurements of the local thickness of rivulets were carried out with the help of laser-induced fluorescence. Data on the wave structure of rivulets is shown in a wide range of frequencies of regular waves for different Reynolds numbers of the flow and contact wetting angles. It was observed for all studied wave conditions that transverse width of rivulets and wetting angles are insensitive to the phase of propagating waves. Moreover, it was found that the wave structure of rivulets differs significantly for the cases of low and high values of the contact angle.

KW - contact wetting angle

KW - laser-induced fluorescence

KW - regular waves

KW - rivulet

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