Effect of Ambient-Gas Forced Flow on Oscillatory Thermocapillary Convection of Half-Zone Liquid Bridge
I. Ueno; A. Kawazoe; and H. Enomoto;

doi:10.3970/fdmp.2010.006.099
Source FDMP: Fluid Dynamics & Materials Processing, Vol. 6, No. 1, pp. 99-108, 2010
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Keywords Liquid bridge, ambient gas flow, flow transition.
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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