TY - JOUR
T1 - Precise density measurements for electromagnetically levitated liquid combined with surface oscillation analysis
AU - Adachi, Masayoshi
AU - Aoyagi, Tomowo
AU - Mizuno, Akitoshi
AU - Watanabe, Masahito
AU - Kobatake, Hidekazu
AU - Fukuyama, Hiroyuki
N1 - Funding Information:
Acknowledgments We would like to thank Prof. T. Hibiya of Keio University and Dr. S. Ozawa of Tokyo Metropolitan University for useful discussions about surface oscillations of liquid droplets. This study was supported by Research and Development to Promote the Creation and Utilization of an Intellectual Infrastructure from New Energy, and also by the Industrial Technology Development Organization (NEDO) with a Grant-in-Aid for Scientific Research (KAKENHI No. 19560747).
PY - 2008/12
Y1 - 2008/12
N2 - A new method is proposed for accurately measuring the densities of high-temperature liquids which involves analyzing the surface oscillations of levitated droplets. This method makes it easy to improve on the accuracy of density measurements obtained by using conventional electromagnetic levitation systems. In addition, the errors in density measurements made on the ground are further reduced by applying a static magnetic field to suppress surface oscillations in levitated liquid droplets. The magnetic field interacts with electrical currents in the levitated droplet, thereby generating a Lorentz force; this force suppresses flow within the liquid droplet. By combining both these methods, the scatter in density measurements for molten Si at temperatures in the range from 1,500 K to 1,900 K is reduced by an order of magnitude compared with previously reported data. Using this new method, the density of molten SiGe has been measured at temperatures from 1,350 K to 1,650 K.
AB - A new method is proposed for accurately measuring the densities of high-temperature liquids which involves analyzing the surface oscillations of levitated droplets. This method makes it easy to improve on the accuracy of density measurements obtained by using conventional electromagnetic levitation systems. In addition, the errors in density measurements made on the ground are further reduced by applying a static magnetic field to suppress surface oscillations in levitated liquid droplets. The magnetic field interacts with electrical currents in the levitated droplet, thereby generating a Lorentz force; this force suppresses flow within the liquid droplet. By combining both these methods, the scatter in density measurements for molten Si at temperatures in the range from 1,500 K to 1,900 K is reduced by an order of magnitude compared with previously reported data. Using this new method, the density of molten SiGe has been measured at temperatures from 1,350 K to 1,650 K.
KW - Density
KW - Electromagnetic levitation
KW - Molten Si
KW - Molten SiGe
KW - Surface oscillations
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U2 - 10.1007/s10765-008-0533-7
DO - 10.1007/s10765-008-0533-7
M3 - Article
AN - SCOPUS:57749185474
VL - 29
SP - 2006
EP - 2014
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
SN - 0195-928X
IS - 6
ER -