Sphere motion in ordered three-dimensional foams


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dc.contributor.author Davies, I. T.
dc.contributor.author Cox, Simon
dc.date.accessioned 2012-04-04T11:34:11Z
dc.date.available 2012-04-04T11:34:11Z
dc.date.issued 2012-04-04
dc.identifier.citation Davies , I T & Cox , S 2012 , ' Sphere motion in ordered three-dimensional foams ' Journal of Rheology , vol 56 , no. 3 , pp. 473-483 . , 10.1122/1.3687415 en
dc.identifier.issn 0148-6055
dc.identifier.other PURE: 175372
dc.identifier.other dspace: 2160/7813
dc.identifier.uri http://hdl.handle.net/2160/7813
dc.description I.T. Davies and S.J. Cox (2012) Sphere motion in ordered three-dimensional foams. J. Rheol. 56:473-483. en
dc.description.abstract The effect of the interplay between surface tension and gravity on the sedimentation of objects in structured fluids is investigated by simulating the quasi-static motion of a spherical particle through an ordered foam. We describe the path which a sphere takes as it descends through bamboo (1,1,0), staircase (2,1,1), chiral (3,2,1), and double staircase (4,2,2) foams, and measure the degree of control of the sphere’s motion that each foam offers. For an ordered foam contained within a vertical cylinder, the resulting sphere motion depends strongly on the structure itself, on how the films are deformed near the sphere, and on how the motion of the sphere deforms them further. For staircase and chiral foams, the distance that a sphere is pulled away from the center-line of the cylinder by the foam is found to depend on the Bond number with a power-law relation. By tilting the cylinder at an angle to the vertical, we show that there exists a critical tilt angle above which the sphere falls out of the foam. This angle is dependent on the choice of foam structure and the Bond number. For a sphere of given size and given Bond number in the ordered foams studied here, the greatest tilt can be imposed on the double staircase foam en
dc.format.extent 11 en
dc.language.iso eng
dc.relation.ispartof Journal of Rheology en
dc.title Sphere motion in ordered three-dimensional foams en
dc.type Text en
dc.type.publicationtype Article (Journal) en
dc.identifier.doi http://dx.doi.org/10.1122/1.3687415
dc.contributor.institution Institute of Mathematics & Physics (ADT) en
dc.contributor.institution Mathematical Modelling of Structures, Solids and Fluids en
dc.description.status Peer reviewed en

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