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The combined effect...
The combined effects of shear and buoyancy on phase boundary stability
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- Toppaladoddi, S. (författare)
- Univ Oxford, Oxford OX2 6GG, England.;Yale Univ, New Haven, CT 06520 USA.
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- Wettlaufer, John (författare)
- Stockholms universitet,KTH,Nordic Institute for Theoretical Physics NORDITA,Nordiska institutet för teoretisk fysik (Nordita),University of Oxford, UK; Yale University, USA
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Univ Oxford, Oxford OX2 6GG, England;Yale Univ, New Haven, CT 06520 USA. Nordic Institute for Theoretical Physics NORDITA (creator_code:org_t)
- 2019-04-17
- 2019
- Engelska.
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Ingår i: Journal of Fluid Mechanics. - : CAMBRIDGE UNIV PRESS. - 0022-1120 .- 1469-7645. ; 868, s. 648-665
- Relaterad länk:
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http://arxiv.org/pdf...
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visa fler...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- We study the effects of externally imposed shear and buoyancy driven flows on the stability of a solid-liquid interface. A linear stability analysis of shear and buoyancy-driven flow of a melt over its solid phase shows that buoyancy is the only destabilizing factor and that the regime of shear flow here, by inhibiting vertical motions and hence the upward heat flux, stabilizes the system. It is also shown that all perturbations to the solid-liquid interface decay at a very modest shear flow strength. However, at much larger shear-flow strength, where flow instabilities coupled with buoyancy might enhance vertical motions, a re-entrant instability may arise.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- buoyancy-driven instability
- morphological instability
- solidification
- melting
- LVES RT
- 1971
- JOURNAL OF CRYSTAL GROWTH
- V8
- P13
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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