Open Access

ARTICLE

Effect of Ambient-Gas Forced Flow on Oscillatory Thermocapillary Convection of Half-Zone Liquid Bridge

by I. Ueno¹, A. Kawazoe², H. Enomoto³

1 Tokyo University of Science, Noda, Chiba, Japan
2 Graduate School, Tokyo University of Science, Noda, Chiba, Japan
3 Graduate School, Tokyo University of Science, Noda, Chiba, Japan (present: Toyota Motor Corp., Aichi, Japan)

Fluid Dynamics & Materials Processing 2010, 6(1), 99-108. https://doi.org/10.3970/fdmp.2010.006.099

Abstract

The authors focus on thermocapillary-driven flow in a half-zone liquid bridge and its transition from two-dimensional steady flow to three-dimensional oscillatory one under an effect of forced convection in ambient gas region around the liquid bridge. The liquid bridge is settled in a cylindrical 'external shield,' in which upward/downward forced flow of the ambient gas is added. The critical condition of the flow transition in the 2-cSt silicone-oil liquid bridge is examined as functions of the aspect ratio and the volume ratio of the liquid bridge, and averaged velocity of the ambient gas. The authors indicate a significant effect of the external flow around the liquid bridge.

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Keywords

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