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Time-dependent moti...
Time-dependent motion of a confined bubble in a tube : transition between two steady states
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- Yu, Yingxian Estella (författare)
- Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
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- Zhu, Lailai (författare)
- KTH,Mekanik,Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.;KTH Mech, Linne Flow Ctr, SE-10044 Stockholm, Sweden.;KTH Mech, Swedish E Sci Res Ctr SeRC, SE-10044 Stockholm, Sweden.
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- Shim, Suin (författare)
- Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
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- Eggers, Jens (författare)
- Univ Bristol, Sch Math, Bristol BS8 1TW, Avon, England.
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- Stone, Howard A. (författare)
- Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA.
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Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA Mekanik (creator_code:org_t)
- 2018-10-29
- 2018
- Engelska.
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Ingår i: Journal of Fluid Mechanics. - : Cambridge University Press. - 0022-1120 .- 1469-7645. ; 857
- Relaterad länk:
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https://research-inf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- When a confined bubble translates steadily in a cylindrical capillary tube, without the consideration of gravity effects, a uniform thin film of liquid separates the bubble surface and the tube wall. In this work, we investigate how this steady state is established by considering the transitional motion of the bubble as it adjusts its film thickness profile between two steady states, characterized by two different bubble speeds. During the transition, two uniform film regions coexist, separated by a step-like transitional region. The transitional motion also requires modification of the film solution near the rear of the bubble, which depends on the ratio of the two capillary numbers. These theoretical results are verified by experiments and numerical simulations.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Nyckelord
- bubble dynamics
- lubrication theory
- thin films
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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