3D PTV measurement of oscillatory thermocapillary convection in half-zone liquid bridge |
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| Authors: | M. Nishimura I. Ueno K. Nishino H. Kawamura |
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| Affiliation: | (1) Department of Mechanical Engineering, Tokyo University of Science, 2641 Yamazaki, 278–8510 Noda, Chiba, Japan;(2) Department of Mechanical Engineering, Yokohama National University, 79–5 Tokiwadai, 240–8501 Hodogaya Yokohama, Kanagawa, Japan |
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| Abstract: | Three-dimensional (3D) reconstruction of a unique particle motion in oscillatory thermocapillary convections in a small-sized half-zone liquid bridge with a radius of O (1 mm) was carried out by applying 3D particle tracking velocimetry (PTV). By placing a small cubic beam splitter above a transparent top rod, simultaneous observation of the particles in the bridge by use of two CCD cameras was realized. Reconstruction of the 3D trajectories and the particle velocity fields in several types of oscillatory flow regimes was conducted successfully for a sufficiently long period without losing particle tracking. |
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