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Experimental and Theoretical Studies on Velocity Field of
Buoyancy Convection in KNbO3 Melt |
| JIN Wei-Qing1;Shinichi YODA2;JIANG Yuan-Fang3;PAN Zhi-Lei1;LIANG Xin-An1 |
| 1Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050
2Space Utilization Research Center, Office of Space Utilization System, NASDA, 2-1-1 Sengen, Tsukuba, Ibaraki 305, Japan
3Department of Physics, East Normal University, Shanghai 200062 |
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| Cite this article: |
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JIN Wei-Qing, Shinichi YODA, JIANG Yuan-Fang et al 2001 Chin. Phys. Lett. 18 275-277 |
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Abstract The Schlieren technique coupling with a differential interference microscope was applied to visualize the KNbO3 melt motion in a loop-shaped Pt wire heater. The natural convection in KNbO3 melt was traced by observing the movement of the tiny KNbO3 crystals (～10μm) and the stream velocities of these tracer crystals were measured. In theoretical analysis, the Navier--Stokes equation was solved as a stable field. The general solution for this system of the differential equation was expressed by an approximate power series of azimuth and radius vector. The expression was substituted in the differential equation; a non-trivial solution was obtained exactly. The velocity distribution in the vertical section was obtained which is in qualitative agreement with the experimental result.
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| Keywords:
78.20.Bh
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Published: 01 February 2001
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| PACS: |
78.20.Bh
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(Theory, models, and numerical simulation)
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