Numerical and Experimental Study of the Influence of Thermal Processes on the Shape of Solidification Front in Czochralski Model for Heptadecane and Gallium
https://doi.org/10.17073/1609-3577-2014-4-257-267
Abstract
Convective heat transfer and solidification have been studied using a simplified but unified simulation/experimental model of the Czochralsky method for two materials with melting points close to room temperature: heptadecane (low heat conductivity) and gallium (high heat conductivity). Due to the transparency of the heptadecane melt we have been able to visualize the melt flow patterns and the solidified structures in a laboratory experiment to provide the simulation model with source data. Based on calculations we have studied the parameters of melt flow patterns, heat flows on the cooled disc and the dependence of solidification front shape for both materials on convective heat transfer modes: thermogravity and mixed (i.e. with additional crystal rotation) convection.
About the Authors
N. A. Verezub
Institute for Problems in Mechanics (IPMech) of Russian Academy of Sciences, 101 Bldg. 1, prospekt Vernadskogo, 119526 Moscow, Russia
Russian Federation
Russian Federation
Senior Researcher, Cand. Sci. (Phys.−Math.)
A. I. Prostomolotov
Institute for Problems in Mechanics (IPMech) of Russian Academy of Sciences, 101 Bldg. 1, prospekt Vernadskogo, 119526 Moscow, Russia
Russian Federation
Russian Federation
Leading Researcher, Dr. Sci. (Eng.)
V. S. Berdnikov
Institute of Thermophysics, Sibirian Branch of Russian Academy of Sciences, 1 Akademika Lavrent’eva Ave., 630090 Novosibirsk, Russia
Russian Federation
Russian Federation
Header of Laboratory, Dr. Sci. (Phys.−Math.)
V. A. Vinokurov
Institute of Thermophysics, Sibirian Branch of Russian Academy of Sciences, 1 Akademika Lavrent’eva Ave., 630090 Novosibirsk, Russia
Russian Federation
Russian Federation
Researcher, Cand. Sci. (Phys.−Math.)
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Review
For citations:
Verezub N.A., Prostomolotov A.I., Berdnikov V.S., Vinokurov V.A. Numerical and Experimental Study of the Influence of Thermal Processes on the Shape of Solidification Front in Czochralski Model for Heptadecane and Gallium. Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki = Materials of Electronics Engineering. 2014;(4):257-267. (In Russ.) https://doi.org/10.17073/1609-3577-2014-4-257-267
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