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- M. Wanschura
- ZARM–University of Bremen, 28359 Bremen, Germany
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- V. M. Shevtsova
- ZARM–University of Bremen, 28359 Bremen, Germany
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- H. C. Kuhlmann
- ZARM–University of Bremen, 28359 Bremen, Germany
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- H. J. Rath
- ZARM–University of Bremen, 28359 Bremen, Germany
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<jats:p>The primary instability of axisymmetric steady thermocapillary flow in a cylindrical liquid bridge with non-deformable free surface is calculated by a mixed Chebychev-finite difference method. For unit aspect ratio the most dangerous mode has an azimuthal wavenumber m=2. The physical instability mechanisms are studied by analyzing the linear energy balance of the neutral mode. If the Prandtl number is small (Pr≪1), the bifurcation is stationary. The associated neutral mode is amplified in the shear layer close to the free surface. For large Prandtl number (Pr=4), the basic state becomes linearly unstable to a pair of hydrothermal waves propagating nearly azimuthally. Both mechanisms are compared with those previously proposed in the literature.</jats:p>
収録刊行物
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- Physics of Fluids
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Physics of Fluids 7 (5), 912-925, 1995-05-01
AIP Publishing
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詳細情報
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- CRID
- 1363951794929947904
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- NII論文ID
- 30015735190
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- NII書誌ID
- AA00773996
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- DOI
- 10.1063/1.868567
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- ISSN
- 10897666
- 10706631
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