Prosiectau fesul blwyddyn
Crynodeb
We describe the extension of a "viscous froth" model to the dynamics of a wet foam in a Hele-Shaw cell. The two-dimensional model includes the friction experienced by the soap films as they are dragged along the cell walls, while retaining accurate geometrical information. To explore the consequences of changing the liquid content in this situation, we consider a simple foam geometry known as a bubble lens: a bubble partially filling a narrow, straight channel with a single film spanning the gap between the bubble and the opposite wall. The triple vertices of this structure are decorated with Plateau borders whose area is related to the liquid fraction of the foam.We derive new expressions to allow the pressure in the Plateau borders to be calculated, and determine numerically the range of driving velocities for which the system reaches a steady state. As the liquid fraction increases, the lens moves more slowly than the spanning film and the spanning film is more greatly distorted, reducing the range of stable driving velocities. For higher velocities, the spanning film moves so quickly that it leaves the bubble behind, a situation which must be avoided in any particular application.
Iaith wreiddiol | Saesneg |
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Tudalennau (o-i) | 8-15 |
Nifer y tudalennau | 8 |
Cyfnodolyn | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
Cyfrol | 534 |
Dyddiad ar-lein cynnar | 05 Mai 2017 |
Dynodwyr Gwrthrych Digidol (DOIs) | |
Statws | Cyhoeddwyd - 05 Rhag 2017 |
Ôl bys
Gweld gwybodaeth am bynciau ymchwil 'A viscous froth model adapted to wet foams'. Gyda’i gilydd, maen nhw’n ffurfio ôl bys unigryw.Setiau Data
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A viscous froth model adapted to wet foams
Vitasari, D. & Cox, S., Prifysgol Aberystwyth | Aberystwyth University, 18 Maw 2019
Dangosydd eitem ddigidol (DOI): 10.20391/d778c8e4-0a5c-474b-816f-9b57a707a0ac, http://facstaff.susqu.edu/brakke/evolver/evolver.html ac un cysylltiad arall, http://www.gnuplot.info/ (dangos llai)
Set ddata
Ffeil
Prosiectau
- 1 Wedi Gorffen
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Flow of Gas-Liquid Foams in Narrow Complex Geometries
Cox, S. (Prif Ymchwilydd)
Engineering & Physical Sciences Research Council
01 Ebr 2016 → 31 Maw 2019
Prosiect: Ymchwil a ariannwyd yn allanol