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First Thermal and Fluids Engineering Summer Conference

ISSN: 2379-1748
ISBN: 978-1-56700-430-4

HOW TO MAKE LIQUID METAL TRANSPARENT? A NEUTRON RADIOGRAPHY METHOD FOR SCALED-DOWN METALLURGICAL EQUIPMENT

DOI: 10.1615/TFESC1.eep.012876
pages 779-792

Mihails Scepanskis
University of Latvia, Laboratory for Mathematical Modeling of Environmental and Technological Processes, Zellu iela 8, Riga LV-1002, Latvia

Knud Thomsen
Paul Scherrer Institute, Villigen PSI CH-5232, Switzerland

Andris Jakovics
University of Latvia, Laboratory for Mathematical Modeling of Environmental and Technological Processes, Zellu iela 8, Riga LV-1002, Latvia

Toms Beinerts
University of Latvia, Institute of Physics, Miera iela 32, Salaspils LV-2169, Latvia

Martins Sarma
University of Latvia, Institute of Physics, Miera iela 32, Salaspils LV-2169, Latvia

Raimonds Nikoluskins
University of Latvia, Institute of Physics, Miera iela 32, Salaspils LV-2169, Latvia

Andris Bojarevics
University of Latvia, Institute of Physics, Miera iela 32, Salaspils LV-2169, Latvia


KEY WORDS: Liquid metal, Neutron radiography, Metallurgical applications, Turbulent flow, Particle-laden flow, Neutron Particle Image Velocimetry

Abstract

Due to the non-transparency of metals it is nearly impossible to observe how solid inclusions behave within a liquid metal. At the same time numerical models, which generally are powerful tools for design of different types of metallurgical equipment, usually contain a high number of degrees of freedom due to the complexity of turbulent flows of liquid metal. Therefore, experimental verification of the numerical models is an essential task, which was hitherto not satisfactorily solved by established technologies. The paper presents a recent and break-through experimental method, which makes liquid metal transparent: dynamic neutron radiography. It allows to visualize dynamics of solid inclusions in metallurgical flows within a scaled-down equipment, keeping fixed non-dimensional hydrodynamic and electromagnetic parameters and applying a permanent magnets technology for electromagnetic agitation in the set-up.

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