Velocity Field of Thermocapillary Convection in High Temperature Oxide Solution
JIN Wei-Qing1, YODA Shinichi2, JIANG Yuan-Fang3, LIANG Xin-An1, PAN Zhi-Lei1, SHEN Guo-Tu3, LIU Zhao-Hua1
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 China Normal University, Shanghai 200062
Velocity Field of Thermocapillary Convection in High Temperature Oxide Solution
JIN Wei-Qing1;YODA Shinichi2;JIANG Yuan-Fang3;LIANG Xin-An1;PAN Zhi-Lei1;SHEN Guo-Tu3;LIU Zhao-Hua1
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 China Normal University, Shanghai 200062
Abstract： We have investigated experimentally and theoretically the thermocapillary convective flow phenomena in a loop-shaped Pt wire heater of KNbO3(20wt.%) and Li2B4O7 solution. Optical evaluations in connection with thermocouple measurements made it possible to get a new type of thermocapillary convective flow in the considered system. To study the kinematical behavior of thermocapillary convection, we have measured the stream velocities of flow. In a theoretical analysis, the flow velocity due to thermocapillary effect alone was estimated by balancing the surface tension forces by viscous forces. The velocity distribution in the solution near the margin of the heater was obtained, which is in agreement with the experimental result.
JIN Wei-Qing;YODA Shinichi;JIANG Yuan-Fang;LIANG Xin-An;PAN Zhi-Lei;SHEN Guo-Tu;LIU Zhao-Hua. Velocity Field of Thermocapillary Convection in High Temperature Oxide Solution[J]. 中国物理快报, 2001, 18(3): 435-436.
JIN Wei-Qing, YODA Shinichi, JIANG Yuan-Fang, LIANG Xin-An, PAN Zhi-Lei, SHEN Guo-Tu, LIU Zhao-Hua. Velocity Field of Thermocapillary Convection in High Temperature Oxide Solution. Chin. Phys. Lett., 2001, 18(3): 435-436.
2001, Vol. 18 
