THE FREE-SURFACE SHAPE AND TEMPERATURE DISTRIBUTION PRODUCED IN LIQUID-METAL DROPLETS BY HEATING COIL PULSES IN THE TEMPUS ELECTROMAGNETIC-LEVITATION FACILITY
E. Schwartz et T. Szekely, THE FREE-SURFACE SHAPE AND TEMPERATURE DISTRIBUTION PRODUCED IN LIQUID-METAL DROPLETS BY HEATING COIL PULSES IN THE TEMPUS ELECTROMAGNETIC-LEVITATION FACILITY, Metallurgical and materials transactions. A, Physical metallurgy andmaterials science, 29(5), 1998, pp. 1127-1134
Citations number
11
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
We present the results of analytical and numerical calculations of the
free-surface shape and temperature distribution produced in liquid me
tal droplets processed in the TEMPUS electromagnetic levitation facili
ty. The mathematical models were developed to predict the behavior of
liquid metal droplets in containerless experiments used to measure the
rmophysical properties aboard the Space Shuttle Columbia during the IM
L-2 mission in July 1994. A normal stress balance model was used to nu
merically calculate the equilibrium free-surface shapes for various sa
mples produced by a number of induction coil voltages. Analytical and
numerical calculations were performed to model the heat transfer in th
e liquid metal droplets during and following the heating coil pulses.
The work illustrates the use of mathematical modeling in the design of
microgravity experiments and is applicable to industrial processes su
ch as casting and skull melting.