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ISSN Online: 2377-424X

ISBN CD: 1-56700-226-9

ISBN Online: 1-56700-225-0

International Heat Transfer Conference 13
August, 13-18, 2006, Sydney, Australia

EXPERIMENTAL INVESTIGATIONS OF METASTABLE QUASI-REGULAR STRUCTURES IN HEATED WAVY LIQUID FILMS

Get access (open in a dialog) DOI: 10.1615/IHTC13.p25.120
11 pages

Abstract

Formation and development of quasi-regular metastable structures within laminar-wavy falling films were studied. These structures emerge within the residual layer between large waves and could be one reason of break up of the falling film. The temperature field of the film surface was visualised using IR-thermography. The film thickness was obtained from point measurements with the chromatic confocal imaging method and converted with an according transformation on the basis of IR-thermography images to the film thickness field. The thermo-capillary nature of regular structures was proven experimentally.