Experimental Evaluation of MHD Modeling of EMS During Continuous Casting

Haijie Zhang, Menghuai Wu, Zhao Zhang, Andreas Ludwig, Abdellah Kharicha, Arnold Rónaföldi, András Roósz, Zsolt Veres, Mária Svéda

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

Electromagnetic stirring (EMS) has been recognized as a mature technique in steel industry to control the as-cast structure of steel continuous casting (CC), and computational magnetohydrodynamic (MHD) methods have been applied to study the EMS efficiency. Most MHD methods de-coupled the calculations of electromagnetic and flow fields or simplifications were made for the flow–electromagnetic interactions. However, the experimental validations of the MHD modeling have been rarely reported or very limited. In this study, we present a benchmark, i.e., a series of laboratory experiments, to evaluate the MHD methods, which have been typically applied for steel CC process. Specifically, a rotating magnetic field (RMF) with variable intensity and frequency is considered. First experiment is performed to measure the distribution of magnetic field without any loaded sample (casting); the second experiment is conducted to measure the RMF-induced torque on a cylindrical sample (different metals/alloys in solid state); the third experiment is (based on a special device) to measure the RMF-induced rotational velocity of the liquid metal (Ga75In25), which is enclosed in a cylindrical crucible. The MHD calculation is performed by coupling ANSYS Maxwell and ANSYS Fluent. The Lorentz force, as calculated by analytical equations, ANSYS Fluent addon MHD module, and external electromagnetic solver, is added as the source term in Navier–Stokes equation. By comparing the simulation results with the benchmark experiments, the calculation accuracy with different coupling methods and modification strategies is evaluated. Based on this, a necessary simplification strategy of the MHD method for CC is established, and application of the simplified MHD method to a CC process is demonstrated.
OriginalspracheEnglisch
Seiten (von - bis)2166-2181
Seitenumfang16
FachzeitschriftMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Jahrgang53.2022
Ausgabenummer4
Frühes Online-Datum19 Apr. 2022
DOIs
PublikationsstatusVeröffentlicht - Aug. 2022

Bibliographische Notiz

Funding Information:
This work was financially supported by the FWF Austrian Science Fund and the Hungarian National Research Development, and Investigation Office (No. 130946) in the framework of the FWF-NKFIN joint project (FWF, I4278-N36) and the Austria Research Promotion Agency (FFG) through the Bridge 1 project (No. 868070)

Publisher Copyright:
© 2022, The Author(s).

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