Lubrication and adhesion of bubbles/droplets in microchannels
Abstract eng: The thin lubrication film around bubbles moving in microchannels was measured using an optical interference method, and the three-dimensional profile of the lubrication film around the bubble was obtained experimentally. The minimum film thickness of the axial section in the downstream direction was found to agree well with the prediction of the Bretherton equation; while the minimum film thickness in the across-stream direction was found to be proportion to the capillary number as the film thickness was decreasing. When the lubrication film was broken, adhesion of the droplets occurred and it was demonstrated to have potential application on the breakup of the emulsion droplet.
Publisher:
International Union of Theoretical and Applied Mechanics, 2016
Conference Title:
Conference Title:
24th International Congress of Theoretical and Applied Mechanics
Conference Venue:
Montreal (CA)
Conference Dates:
2016-08-21 / 2016-08-26
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2016-11-15, last modified 2016-11-15
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