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Document type: Papers

Conference/Event: Experimental Fluid Mechanics 2012 /7./, Hradec Králové (CZ), 2012-11-20 / 2012-11-23

Year:2012

Language: eng

Abstract: The motion of single air bubbles in flat channels is experimentally investigated. The electrodiffusion technique of near-wall flow diagnostics is applied to measure the wall shear stress distribution under large rising bubbles. The measurements are synchronized with the visual observation of bubble movement by a high-speed camera. The analysis of video records provides information on the bubble shape and terminal velocity. The experiments are carried out for three different channel configuration (with heights of 1.5, 4, and 8 mm), cover a wide range of channel inclination angles (from horizontal to vertical position), and dealing with both the bubbles in stagnant and in co-flowing water.

Keywords:electrodiffusion method; Taylor bubble; wall shear stress

Project no.: GAP101/12/0585 (CEP)

Host item entry: Proceedings, ISBN 978-80-7372-912-7

Note: Související webová stránka: http://efm.kez.tul.cz/

Rights: Document is protected under the Copyright Act No. 121/2000 Coll.

Institution: Institute of Chemical Process Fundamentals AS ČR(web)

Original record: http://hdl.handle.net/11104/0213628

Permalink: http://www.nusl.cz/ntk/nusl-135079



Autor: Tihon, Jaroslav ; Pěnkavová, Věra ; Vejražka, Jiří

Fuente: http://invenio.nusl.cz/record/135079?ln=en







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