Assessment of Electromagnetic Stirrer Agitated Liquid Metal Flows by Dynamic Neutron Radiography

Mihails Ščepanskis; Mārtiņš Sarma; Peter Vontobel; Pavel Trtik; Knud Thomsen; Andris Jakovičs; Toms Beinerts

doi:10.1007/s11663-016-0902-8

Assessment of Electromagnetic Stirrer Agitated Liquid Metal Flows by Dynamic Neutron Radiography

Mihails Ščepanskis^*
, Mārtiņš Sarma
, Peter Vontobel
, Pavel Trtik
, Knud Thomsen
, Andris Jakovičs
, Toms Beinerts

^*Corresponding author for this work

Helmholtz-Zentrum Dresden-Rossendorf
Paul Scherrer Institute

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

Abstract

This paper presents qualitative and quantitative characterization of two-phase liquid metal flows agitated by the stirrer on rotating permanent magnets. The stirrer was designed to fulfill various eddy flows, which may have different rates of solid particle entrapment from the liquid surface and their homogenization. The flow was characterized by visualization of the tailored tracer particles by means of dynamic neutron radiography, an experimental method well suited for liquid metal flows due to low opacity of some metals for neutrons. The rather high temporal resolution of the image acquisition (32 Hz image acquisition rate) allows for the quantitative investigation of the flows up to 30 cm/s using neutron particle image velocimetry. In situ visualization of the two-phase liquid metal flow is also demonstrated.

Original language	English
Pages (from-to)	1045-1054
Number of pages	10
Journal	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume	48
Issue number	2
DOIs	https://doi.org/10.1007/s11663-016-0902-8
Publication status	Published - 1 Apr 2017

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10.1007/s11663-016-0902-8

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title = "Assessment of Electromagnetic Stirrer Agitated Liquid Metal Flows by Dynamic Neutron Radiography",

abstract = "This paper presents qualitative and quantitative characterization of two-phase liquid metal flows agitated by the stirrer on rotating permanent magnets. The stirrer was designed to fulfill various eddy flows, which may have different rates of solid particle entrapment from the liquid surface and their homogenization. The flow was characterized by visualization of the tailored tracer particles by means of dynamic neutron radiography, an experimental method well suited for liquid metal flows due to low opacity of some metals for neutrons. The rather high temporal resolution of the image acquisition (32 Hz image acquisition rate) allows for the quantitative investigation of the flows up to 30 cm/s using neutron particle image velocimetry. In situ visualization of the two-phase liquid metal flow is also demonstrated.",

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Assessment of Electromagnetic Stirrer Agitated Liquid Metal Flows by Dynamic Neutron Radiography. / Ščepanskis, Mihails; Sarma, Mārtiņš; Vontobel, Peter et al.
In: Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science, Vol. 48, No. 2, 01.04.2017, p. 1045-1054.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

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AU - Ščepanskis, Mihails

AU - Sarma, Mārtiņš

AU - Vontobel, Peter

AU - Trtik, Pavel

AU - Thomsen, Knud

AU - Jakovičs, Andris

AU - Beinerts, Toms

PY - 2017/4/1

Y1 - 2017/4/1

N2 - This paper presents qualitative and quantitative characterization of two-phase liquid metal flows agitated by the stirrer on rotating permanent magnets. The stirrer was designed to fulfill various eddy flows, which may have different rates of solid particle entrapment from the liquid surface and their homogenization. The flow was characterized by visualization of the tailored tracer particles by means of dynamic neutron radiography, an experimental method well suited for liquid metal flows due to low opacity of some metals for neutrons. The rather high temporal resolution of the image acquisition (32 Hz image acquisition rate) allows for the quantitative investigation of the flows up to 30 cm/s using neutron particle image velocimetry. In situ visualization of the two-phase liquid metal flow is also demonstrated.

AB - This paper presents qualitative and quantitative characterization of two-phase liquid metal flows agitated by the stirrer on rotating permanent magnets. The stirrer was designed to fulfill various eddy flows, which may have different rates of solid particle entrapment from the liquid surface and their homogenization. The flow was characterized by visualization of the tailored tracer particles by means of dynamic neutron radiography, an experimental method well suited for liquid metal flows due to low opacity of some metals for neutrons. The rather high temporal resolution of the image acquisition (32 Hz image acquisition rate) allows for the quantitative investigation of the flows up to 30 cm/s using neutron particle image velocimetry. In situ visualization of the two-phase liquid metal flow is also demonstrated.

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JF - Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science

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Assessment of Electromagnetic Stirrer Agitated Liquid Metal Flows by Dynamic Neutron Radiography

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