An Analysis of Electromagnetic Field and Joule Heating of Electroslag Remelting Processes with Two Series-Connected Electrodes

Based on the magnetohydrodynamic module of the commercial computational fluid dynamics software FLUENT, a 3-D mathematical model was developed to describe the multi-field coupling phenomenon in the electroslag remelting process. The model predicted value is in good agreement with the experimental measurements. The simulation results show that, during the melt dripping process, the resistance of the electroslag remelting system is decreasing while the current density and velocity, as well as the temperature are increasing gradually. The maximum value of current density, electromagnetic force, and velocity appears when the melt droplet detaches and the quality of large droplets fall into the slag-metal interface. The maximum value of the current density is increased by almost one order of magnitude. The maximum value of the electromagnetic force and velocity increased by 2.5 and 4.7 times, respectively. The maximum value of Joule heating and temperature appears when the droplets fall into the slag-metal interface. The maximum value of the Joule heating and temperature increased for about 174.7% and 26.8%, respectively, when compared with the moment of the melt droplet formation.

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Effects of Metal Droplets on Electromagnetic Field, Fluid Flow and Temperature Field in Electroslag Remelting Process

ISIJ International ◽

10.2355/isijinternational.isijint-2017-084 ◽

2017 ◽

Vol 57 (7) ◽

pp. 1205-1212 ◽

Cited By ~ 11

Author(s):

Jia Yu ◽

Zhouhua Jiang ◽

Fubin Liu ◽

Kui Chen ◽

Huabing Li ◽

...

Keyword(s):

Electromagnetic Field ◽

Temperature Field ◽

Fluid Flow ◽

Electroslag Remelting ◽

Metal Droplets

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NUMERICAL MODELING OF ELECTROACOUSTIC LOGGING INCLUDING JOULE HEATING

International Journal of Modern Physics C ◽

10.1142/s0129183111016622 ◽

2011 ◽

Vol 22 (08) ◽

pp. 805-823 ◽

Cited By ~ 1

Author(s):

BORIS D. PLYUSHCHENKOV ◽

ANATOLY A. NIKITIN ◽

VICTOR I. TURCHANINOV

Keyword(s):

Numerical Simulation ◽

Numerical Modeling ◽

Electromagnetic Field ◽

Joule Heating ◽

Acoustic Waves ◽

Heat Conduction Equation ◽

Heating Effect ◽

Field Source ◽

Thermoelastic Stresses ◽

Waves Propagation

It is well known that electromagnetic field excites acoustic wave in a porous elastic medium saturated with fluid electrolyte due to electrokinetic conversion effect. Pride's equations describing this process are written in isothermal approximation. Update of these equations, which allows to take influence of Joule heating on acoustic waves propagation into account, is proposed here. This update includes terms describing the initiation of additional acoustic waves excited by thermoelastic stresses and the heat conduction equation with right side defined by Joule heating. Results of numerical modeling of several problems of propagation of acoustic waves excited by an electric field source with and without consideration of Joule heating effect in their statements are presented. From these results, it follows that influence of Joule heating should be taken into account at the numerical simulation of electroacoustic logging and at the interpretation of its log data.

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Modeling of Electromagnetic Field and Liquid Metal Pool Shape in an Electroslag Remelting Process with Two Series-Connected Electrodes

Metallurgical and Materials Transactions B ◽

10.1007/s11663-013-9996-4 ◽

2013 ◽

Vol 45 (3) ◽

pp. 1122-1132 ◽

Cited By ~ 26

Author(s):

Baokuan Li ◽

Bo Wang ◽

Fumitaka Tsukihashi

Keyword(s):

Electromagnetic Field ◽

Liquid Metal ◽

Electroslag Remelting ◽

Metal Pool ◽

Pool Shape

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Global solutions in one-dimensional magneto-thermoviscoelasticity

European Journal of Applied Mathematics ◽

10.1017/s0956792500000395 ◽

1991 ◽

Vol 2 (1) ◽

pp. 83-96 ◽

Cited By ~ 3

Author(s):

Jürgen Sprekels

Keyword(s):

Electromagnetic Field ◽

Joule Heating ◽

Space Variable ◽

Global Solutions ◽

Smooth Solutions ◽

One Dimensional ◽

Global Smooth Solutions ◽

Isotropic Solid ◽

Displacement Currents ◽

Thermally Conducting

Global smooth solutions are shown to exist for the system governing magneto-thermoviscoelastic phenomena in an electrically and thermally conducting isotropic solid immersed in an electromagnetic field. It is assumed that displacement currents are negligible, and that all field quantities depend on one space variable only; Joule heating is included.

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