Journal ArticleDOI
Magnetohydronamic and thermal behavior of electroslag remelting slags
TLDR
In this article, a mathematical model that simulates the electroslag remelting (ESR) operation was developed and used to evaluate the influence of operating variables, such as the fill ratio, and the thermophysical properties of the slag.Abstract:
The paper is based on the development and use of a mathematical model that simulates the electroslag remelting (ESR) operation. The model assumes axisymmetrical geometry and steady state. Maxwell equations are first solved to determine the electromagnetic forces and Joule heating. Next, coupled fluid flow and heat transfer equations are written for the two liquids (slag and liquid metal). Thek-e model is used to represent turbulence. The system of coupled partial differential equations is then solved, using a control volume method. Using the operating parameters as inputs, the model calculates the current density, velocity, and temperature throughout the fluids. This paper is concerned with fluid flow and heat transfer in the slag phase. After being validated by comparing its results with experimental observation, the model is used to evaluate the influence of operating variables, such as the fill ratio, and the thermophysical properties of the slag.read more
Citations
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Journal ArticleDOI
A Comprehensive Model of the Electroslag Remelting Process: Description and Validation
V. Weber,V. Weber,Alain Jardy,B. Dussoubs,D. Ablitzer,S. Ryberon,V. Schmitt,Stéphane Hans,Henri Poisson +8 more
TL;DR: In this paper, a transient-state numerical model has been developed that accounts for electromagnetic phenomena and coupled heat and momentum transfers in an axisymmetrical geometry, which simulates the continuous growth of the electroslag-remelted ingot through a mesh-splitting method.
Journal ArticleDOI
Review on Modeling and Simulation of Electroslag Remelting
TL;DR: In this article, the main findings starting from the 1970's, with a special focus on the results obtained in the period of 1999-2017, are discussed, and the difficulties related to the poorly known physical properties of ESR slags are discussed.
Journal ArticleDOI
A General Coupled Mathematical Model of Electromagnetic Phenomena, Two-Phase Flow, and Heat Transfer in Electroslag Remelting Process Including Conducting in the Mold
TL;DR: In this paper, a transient three-dimensional finite-volume mathematical model has been developed to investigate the coupled physical fields in the electroslag remelting (ESR) process, where the mold is assumed to be conductive rather than insulated.
Journal ArticleDOI
A Dynamic Mesh-Based Approach to Model Melting and Shape of an ESR Electrode
TL;DR: In this article, the shape of tip and melt rate of an electrode during electroslag remelting were investigated using a dynamic mesh-based approach to model the dynamic formation of shape of electrode tip.
Journal ArticleDOI
Simulation of the Electric Signal During the Formation and Departure of Droplets in the Electroslag Remelting Process
TL;DR: In this article, a multiphase-magnetohydrodynamic approach was proposed to explore the complex coupling existing between the electrodynamics and the phase distribution during the ESR process.
References
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Book
Numerical heat transfer and fluid flow
TL;DR: In this article, the authors focus on heat and mass transfer, fluid flow, chemical reaction, and other related processes that occur in engineering equipment, the natural environment, and living organisms.
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Boundary layer theory
TL;DR: The flow laws of the actual flows at high Reynolds numbers differ considerably from those of the laminar flows treated in the preceding part, denoted as turbulence as discussed by the authors, and the actual flow is very different from that of the Poiseuille flow.
Journal ArticleDOI
The numerical computation of turbulent flows
Brian Launder,D. B. Spalding +1 more
TL;DR: In this paper, the authors present a review of the applicability and applicability of numerical predictions of turbulent flow, and advocate that computational economy, range of applicability, and physical realism are best served by turbulence models in which the magnitudes of two turbulence quantities, the turbulence kinetic energy k and its dissipation rate ϵ, are calculated from transport equations solved simultaneously with those governing the mean flow behaviour.
Journal ArticleDOI
The modeling of pool profiles, temperature profiles and velocity fields in ESR systems
M. Choudhary,Julian Szekely +1 more
TL;DR: In this article, a mathematical model was developed to represent the pool profiles, the velocity fields and the temperature profiles in an ESR system, which is capable of predicting pool profiles from first principles.