A new bubble dynamics model to study bubble growth, deformation, and coalescence

Simple item page
dc.citation.firstpage216en_US
dc.citation.issueNumber1en_US
dc.citation.journalTitleJournal of Geophysical Research: Solid Earthen_US
dc.citation.lastpage239en_US
dc.citation.volumeNumber119en_US
dc.contributor.authorHuber, C.en_US
dc.contributor.authorSu, Y.en_US
dc.contributor.authorNguyen, C.T.en_US
dc.contributor.authorParmigiani, A.en_US
dc.contributor.authorGonnermann, H.M.en_US
dc.contributor.authorDufek, J.en_US
dc.date.accessioned2016-01-28T17:15:40Zen_US
dc.date.available2016-01-28T17:15:40Zen_US
dc.date.issued2014en_US
dc.description.abstractWe propose a new bubble dynamics model to study the evolution of a suspension of bubbles over a wide range of vesicularity, and that accounts for hydrodynamical interactions between bubbles while they grow, deform under shear flow conditions, and exchange mass by diffusion coarsening. The model is based on a lattice Boltzmann method for free surface flows. As such, it assumes an infinite viscosity contrast between the exsolved volatiles and the melt. Our model allows for coalescence when two bubbles approach each other because of growth or deformation. The parameter (disjoining pressure) that controls the coalescence efficiency, i.e., drainage time for the fluid film between the bubbles, can be set arbitrarily in our calculations. We calibrated this parameter by matching the measured time for the drainage of the melt film across a range of Bond numbers (ratio of buoyancy to surface tension stresses) with laboratory experiments of a bubble rising to a free surface. The model is then used successfully to model Ostwald ripening and bubble deformation under simple shear flow conditions. The results we obtain for the deformation of a single bubble are in excellent agreement with previous experimental and theoretical studies. For a suspension, we observe that the collective effect of bubbles is different depending on the relative magnitude of viscous and interfacial stresses (capillary number). At low capillary number, we find that bubbles deform more readily in a suspension than for the case of a single bubble, whereas the opposite is observed at high capillary number.en_US
dc.identifier.citationHuber, C., Su, Y., Nguyen, C.T., et al.. "A new bubble dynamics model to study bubble growth, deformation, and coalescence." <i>Journal of Geophysical Research: Solid Earth,</i> 119, no. 1 (2014) American Geophysical Union: 216-239. http://dx.doi.org/10.1002/2013JB010419.en_US
dc.identifier.doihttp://dx.doi.org/10.1002/2013JB010419en_US
dc.identifier.urihttps://hdl.handle.net/1911/88223en_US
dc.language.isoengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.subject.keywordvolcanologyen_US
dc.subject.keywordbubble dynamicsen_US
dc.subject.keywordcoalescenceen_US
dc.subject.keywordcapillary numberen_US
dc.titleA new bubble dynamics model to study bubble growth, deformation, and coalescenceen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Huber_et_al-2014.pdf
Size:
1.96 MB
Format:
Adobe Portable Document Format
Download
Collections
Faculty Publications
Earth, Environmental and Planetary Sciences Publications