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Measurement of water falling film thickness to flat plate using confocal chromatic sensoring technique

Zhou, D. W. ; Gambaryan-Roisman, Tatiana ; Stephan, Peter (2009)
Measurement of water falling film thickness to flat plate using confocal chromatic sensoring technique.
In: Experimental Thermal and Fluid Science, 33 (2)
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

An experimental investigation of wavy water film falling down a flat plate has been carried out using confocal chromatic sensoring technique to determine the instantaneous and statistical characteristics of the film. The experiments involved three parameters: liquid feed mode, Reynolds number and plate inclination angle. The present time--average film thickness data is compared with the previous experimental and theoretical results showing a good agreement. A new correlation for the average film thickness is suggested. Our results show that the liquid feed mode has a vital influence on the film thickness and that the film thickness increases with Reynolds number and decreased plate inclination angle. The root--mean--square value of the film thickness fluctuations depends non-monotonically on the film Reynolds number. The corresponding mechanisms are analyzed.

Typ des Eintrags: Artikel
Erschienen: 2009
Autor(en): Zhou, D. W. ; Gambaryan-Roisman, Tatiana ; Stephan, Peter
Art des Eintrags: Bibliographie
Titel: Measurement of water falling film thickness to flat plate using confocal chromatic sensoring technique
Sprache: Englisch
Publikationsjahr: 2009
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Experimental Thermal and Fluid Science
Jahrgang/Volume einer Zeitschrift: 33
(Heft-)Nummer: 2
URL / URN: http://dx.doi.org/10.1016/j.expthermflusci.2008.09.003
Kurzbeschreibung (Abstract):

An experimental investigation of wavy water film falling down a flat plate has been carried out using confocal chromatic sensoring technique to determine the instantaneous and statistical characteristics of the film. The experiments involved three parameters: liquid feed mode, Reynolds number and plate inclination angle. The present time--average film thickness data is compared with the previous experimental and theoretical results showing a good agreement. A new correlation for the average film thickness is suggested. Our results show that the liquid feed mode has a vital influence on the film thickness and that the film thickness increases with Reynolds number and decreased plate inclination angle. The root--mean--square value of the film thickness fluctuations depends non-monotonically on the film Reynolds number. The corresponding mechanisms are analyzed.

Fachbereich(e)/-gebiet(e): 16 Fachbereich Maschinenbau
16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD)
Exzellenzinitiative
Exzellenzinitiative > Exzellenzcluster
Zentrale Einrichtungen
Exzellenzinitiative > Exzellenzcluster > Center of Smart Interfaces (CSI)
Hinterlegungsdatum: 17 Mär 2015 14:36
Letzte Änderung: 08 Aug 2019 13:31
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