| Modeling and Measurements of Heat Transfer Phenomena in Two-Phase PbSn Alloy Solidification in an External Magnetic Field |
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| 作者姓名： | P.A.Nikrityuk K.Eckert R.Grundmann B. Willers S. Eckert |
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| 作者单位： | Institute for Aerospace Engineering，Dresden University of Technology，D-01062 Dresden，Germany，Institute for Aerospace Engineering，Dresden University of Technology，D-01062 Dresden，Germany，Institute for Aerospace Engineering，Dresden University of Technology，D-01062 Dresden，Germany，Research Center Rossendorf，P.O. Box 510119，D-01314 Dresden，Germany，Research Center Rossendorf，P.O. Box 510119，D-01314 Dresden，Germany |
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| 摘 要： | The main aim of this work is to study numerically the influence of an external magnetic field on the solidification processes of two-component materials. Based on the continuum model of two-phase flow a mathematical model for the directional solidification of a binary alloy in a magnetic field is presented. The model includes mass, momentum, energy and species mass conservation equations written in compressible form and additional relationships describing the temperature-solute coupling. The geometry under study is a cylindrical mold with adiabatic walls and cooled bottom. The macroscale transport in the solidification of alloys is governed by the progress of the two-phase mushy zone, which is treated by means of a porous medium approach. The volume fraction of liquid and solid phases, respectively, is calculated from a 2D approximation of the phase diagram. The results of calculation are compared with experimental data.
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| 关 键 词： | 旋转磁场 洛伦兹力 糊状带 凝固作用 热传递 双相锡铅合金 航空动力学 |
| 收稿时间： | 6 November 2007 |
Modeling and measurements of heat transfer phenomena in two-phase PbSn alloy solidification in an external magnetic field |
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| P.A.Nikrityuk,K.Eckert,R.Grundmann,B. Willers,S. Eckert.Modeling and Measurements of Heat Transfer Phenomena in Two-Phase PbSn Alloy Solidification in an External Magnetic Field[J].Journal of Thermal Science,2003,12(4):357-362. |
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| Authors: | P A Nikrityuk K Eckert R Grundmann B Willers S Eckert |
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| Affiliation: | (1) Institute for Aerospace Engineering, Dresden University of Technology, D-01062 Dresden, Germany;(2) Research Center Rossendorf, P.O. Box 510119, D-01314 Dresden, Germany |
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| Abstract: | The main aim of this work is to study numerically the influence of an external magnetic field on the solidification processes of two-component materials. Based on the continuum model of two-phase flow a mathematical model for the directional solidification of a binary alloy in a magnetic field is presented. The model includes mass, momentum, energy and species mass conservation equations written in compressible form and additional relationships describing the temperature-solute coupling. The geometry under study is a cylindrical mold with adiabatic walls and cooled bottom. The macroscale transport in the solidification of alloys is governed by the progress of the two-phase mushy zone, which is treated by means of a porous medium approach. The volume fraction of liquid and solid phases, respectively, is calculated from a 2D approximation of the phase diagram. The results of calculation are compared with experimental data. |
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| Keywords: | solidification measurements mushy zone Lorentz force rotating magnetic field |
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