Options
October 4, 2022
Conference Paper
Title
Magnetohydrodynamics Modeling of Submerged Arc Furnace with MpCCI and ANSYS
Abstract
This work aims to develop a magnetohydrodynamics (MHD) numerical model applied to submerged arc furnaces (SAFs). Saf ́s are used in metallurgical industries for ferroalloy production, in this case silicon/ferrosilicon. In the SAF, energy is released by ohmic heating as the current passes through the furnace. This heat dissipation is split between an electric arc at temperatures in the order of 20000 K and releases heat at a temperature that supports the last and most energy-intensive step of silicon production. To better understand the silicon production process, it is crucial to get an insight into the electric arc behavior in SAF. The phenomena in SAF are governed by chemistry and magneto-hydrodynamics. This paper focuses on modeling MHD, considering the Lorentz forces, Ohmic heating, and radiative heat transfer.
In this work, a multi-physics solution MpCCI is applied to subdivide the complex problem into smaller problems. Each physics problem can be solved by a separate solver. Besides the highly coupled physics aspect, the challenge still remains in the plasma modeling on the one hand. The physical properties of the plasma are one of the keys to modeling electric arc behavior. On the other hand, the realistic simulation of the electric arc phenomenon leads to enormous computation times.
In the scope of this work, the MpCCI ArcLib provides the capability to model the phenomenon of the electric arc. The tool includes the standard approximations for arc modeling used in industry, such as material properties calculation in the LTE approximation implemented in the Ansys Fluent flow solver.
This paper is about the use of modern software packages for simulations of electric arcs in SAF, where the coupling methods and modeling strategies will be presented to get insights into the arc behavior.
In this work, a multi-physics solution MpCCI is applied to subdivide the complex problem into smaller problems. Each physics problem can be solved by a separate solver. Besides the highly coupled physics aspect, the challenge still remains in the plasma modeling on the one hand. The physical properties of the plasma are one of the keys to modeling electric arc behavior. On the other hand, the realistic simulation of the electric arc phenomenon leads to enormous computation times.
In the scope of this work, the MpCCI ArcLib provides the capability to model the phenomenon of the electric arc. The tool includes the standard approximations for arc modeling used in industry, such as material properties calculation in the LTE approximation implemented in the Ansys Fluent flow solver.
This paper is about the use of modern software packages for simulations of electric arcs in SAF, where the coupling methods and modeling strategies will be presented to get insights into the arc behavior.
Author(s)