| Original Articles |
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Instability from Steady and Axisymmetric to Steady and Asymmetric Floating Half Zone Convection in a Fat Liquid Bridge of Larger Prandtl Number |
| CHEN Qi-sheng1,2;HU Wen-rui1 |
| 1Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080
2Department of Mechanical Engineeing, State University of New York, Stony Brook, NY 11794, USA
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| Cite this article: |
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CHEN Qi-sheng, HU Wen-rui 1999 Chin. Phys. Lett. 16 822-823 |
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Abstract The linear instability analysis of the present paper shows that the thermocapillary convection in a half floating zone of larger Prandtl number has a steady instability mode ωi = 0 and m = 1 for a fat liquid bridge V = 1.2 with small geometrical aspect ratio A = 0.6. This conclusion is different from the usual idea of hydrothermal instability, and implies that the instability of the system may excite a steady and axial asymmetric state before the onset of oscillation in the case of large Prandtl number.
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| Keywords:
47.20.Dr
47.27.Te
47.15.Fe
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Published: 01 November 1999
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| PACS: |
47.20.Dr
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(Surface-tension-driven instability)
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47.27.te
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(Turbulent convective heat transfer)
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47.15.Fe
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(Stability of laminar flows)
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