Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys

Nagaum Hiromi

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Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys
Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys
2008年第S1期页码：485-490
纸质出版日期： 2008 ，
DOI：

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[1]Nagaum Hiromi.Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys[J].特种铸造及有色合金,2008(S1):485-490.

Zhang Haitao1. Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys[J]. Special Casting & Nonferrous Alloys, 2008,(S1):485-490.
[1]Nagaum Hiromi.Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys[J].特种铸造及有色合金,2008(S1):485-490. DOI：

Zhang Haitao1. Coupled Modeling of Electromagnetic Fleld,Fluid Flow,Heat Transfer and Solidification During Conventional DC Casting and Low Ftequency Electrmagnetic Casting of 7xxx Aluminum Alloys[J]. Special Casting & Nonferrous Alloys, 2008,(S1):485-490. DOI：

摘要

A comprehensive mathematical model has been developed to describe the interaction of the multiple physics fields during the conventional DC casting and LFEC （low frequency electromagnetic casting） process. The model is based on a combination of the commercial finite element package ANSYS and the commercial finite volume package FLUENT

with the former for the calculation of the electromagnetic field and the latter for the calculation of the magnetic driven fluid flow

heat transfer and solidification. Moreover

the model has been verified against the temperature measurements obtained from two 7XXX aluminum alloy billets of 200mm diameter

cast during the conventional DC casting and the LFEC casting processes. In addition

a measurement of the sump shape of the billets were carried out by using addition melting metal of Al-30%Cu alloy into the billets during casting process. There was a good agreement between the calculated results and the measured results. Further

comparison of the calculated results during the LFEC process with that during the conventional DC casting process indicated that velocity patterns

temperature profiles and the sump depth are strongly modified by the application of a low frequency electromagnetic field during the DC casting.

Abstract

with the former for the calculation of the electromagnetic field and the latter for the calculation of the magnetic driven fluid flow

heat transfer and solidification. Moreover

the model has been verified against the temperature measurements obtained from two 7XXX aluminum alloy billets of 200mm diameter

cast during the conventional DC casting and the LFEC casting processes. In addition

comparison of the calculated results during the LFEC process with that during the conventional DC casting process indicated that velocity patterns

temperature profiles and the sump depth are strongly modified by the application of a low frequency electromagnetic field during the DC casting.

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