Effect of processing conditions on drop behavior in an electromagnetic levitator

作者: S. H. Hahn , Y. Sakai , T. Tsukada , M. Hozawa , M. Imaishi

DOI: 10.1007/S11663-998-0025-Y

关键词: SiliconMagnetic confinement fusionDrop (liquid)Heating elementMechanicsChemistryElectromagnetic fieldMathematical modelElectromagnetic suspensionOpticsMagnetic levitation

摘要: A mathematical model, which can predict the electromagnetic and temperature fields also shape of a molten silicon drop, has been developed for improvement determination optimal processing conditions in an levitation (EML) device recently to accurately measure thermophysical properties silicon. As result, it was found that there exists unstable state drop squeezed then might be collapsed due force acting on sample’s surface. Also, results suggest material is not necessarily perfect sphere under microgravity environment because heating coil current.

参考文章(28)
A. D. Sneyd, H. K. Moffatt, Fluid dynamical aspects of the levitation-melting process Journal of Fluid Mechanics. ,vol. 117, pp. 45- 70 ,(1982) , 10.1017/S0022112082001517
I. Egry, J. Szekely, The measurement of thermophysical properties in microgravity using electromagnetic levitation Advances in Space Research. ,vol. 11, pp. 263- 266 ,(1991) , 10.1016/0273-1177(91)90294-T
P. V. R. Suryanarayana, Y. Bayazitoglu, Effect of static deformation and external forces on the oscillations of levitated droplets Physics of Fluids A: Fluid Dynamics. ,vol. 3, pp. 967- 977 ,(1991) , 10.1063/1.857974
A. Gagnoud, M. Garnier, Physical analysis and modelization of phenomena in electromagnetic levitation in conical inductor IEEE Transactions on Magnetics. ,vol. 21, pp. 1886- 1888 ,(1985) , 10.1109/TMAG.1985.1063912
J.H. Zong, J. Szekely, G. Lohofer, Calculations and Experiments Concerning Lifting Force and Power in TEMPUS Acta Astronautica. ,vol. 29, pp. 371- 378 ,(1993) , 10.1016/0094-5765(93)90021-N
Y. Bayazitoglu, U. B. R. Sathuvalli, P. V. R. Suryanarayana, G. F. Mitchell, Determination of surface tension from the shape oscillations of an electromagnetically levitated droplet Physics of Fluids. ,vol. 8, pp. 370- 383 ,(1996) , 10.1063/1.868791
Yildiz Bayazitoglu, PVR Suryanarayana, Electromagnetic Levitation with Acoustic Modulation for Property Measurement Journal of Thermophysics and Heat Transfer. ,vol. 3, pp. 351- 353 ,(1989) , 10.2514/3.28789
A. J. Mestel, Magnetic levitation of liquid metals Journal of Fluid Mechanics. ,vol. 117, pp. 27- 43 ,(1982) , 10.1017/S0022112082001505
A. Bratz, I. Egry, Surface oscillations of electromagnetically levitated viscous metal droplets Journal of Fluid Mechanics. ,vol. 298, pp. 341- 359 ,(1995) , 10.1017/S002211209500334X