Number of the records: 1  

Experiments on Large Bubbles Rising in an Inclined Flat Channel

  1. 1.
    0341646 - ÚCHP 2011 RIV DE eng C - Conference Paper (international conference)
    Tihon, Jaroslav - Pěnkavová, Věra - Vejražka, Jiří
    Experiments on Large Bubbles Rising in an Inclined Flat Channel.
    Fortschritt-berichte VDI, Reihe 3, Nr. 920. Düsseldorf: VDI Verlag, 2011 - (Schindler, F.), s. 75-88. ISBN 978-3-18-392003-7. ISSN 0178-9503.
    [International Berlin Workshop on Transport Phenomena with Moving Boundaries /5./. Berlin (DE), 08.10.2009-09.10.2009]
    R&D Projects: GA AV ČR(CZ) IAA200720801
    Institutional research plan: CEZ:AV0Z40720504
    Keywords : two-phase flow * large flat bubbles * wall shear stress
    Subject RIV: CI - Industrial Chemistry, Chemical Engineering

    The motion of single air bubbles in an inclined flat water channel is investigated experimentally. The electrodiffusion technique of near-wall flow diagnostics is applied to measure the wall shear stress distribution under large bubbles rising along the upper channel wall. The electrodiffusion measurements are synchronized with the visual observation of bubble movement done 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 heights (1.5, 4, and 8 mm) and cover a wide range of channel inclination angles (from horizontal to vertical position). The experimental results on bubble motion characteristics obtained in stagnant and co-flowing liquid arrangements are confronted with the recent predictions and scaling provided by theoretical models.
    Permanent Link: http://hdl.handle.net/11104/0184565

     
     
Number of the records: 1  

  This site uses cookies to make them easier to browse. Learn more about how we use cookies.