摘要
The Schlieren technique coupling with a differential interference microscope was applied to visualize the KNbO_(3) melt motion in a loop-shaped Pt wire heater.The natural convection in KNbO_(3) melt was traced by observing the movement of the tiny KNbO_(3) 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.
作者
JIN Wei-Qing
Shinichi YODA
JIANG Yuan-Fang
PAN Zhi-Lei
LIANG Xin-An
金蔚青;Shinichi YODA;蒋元方;潘志雷;梁歆桉(Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050;Space Utilization Research Center,Office of Space Utilization System,NASDA,2-1-1 Sengen,Tsukuba,Ibaraki 305,Japan;Department of Physics,East Normal University,Shanghai 200062)
基金
Supported by a grant for key research project of microgravity science from the State Science and Technology Commission of China(95-Yu-34)
the National Natural Science Foundation of China under Grant No.59832080
National Space Development Agency of Japan(NASDA).
