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

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.

[1]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[2]  Yasushi Saito,et al.  Measurements of liquid–metal two-phase flow by using neutron radiography and electrical conductivity probe , 2005 .

[3]  P. Vontobel,et al.  PROPERTIES OF THE RADIOGRAPHY FACILITY NEUTRA AT SINQ AND ITS POTENTIAL FOR USE AS EUROPEAN REFERENCE FACILITY , 2001 .

[4]  A. Jakovics,et al.  Simulation of liquid metal flow induced by counter-rotating permanent magnets in a rectangular crucible , 2015 .

[5]  Miss A.O. Penney.  (b) , 1974, The New Yale Book of Quotations.

[6]  Anders Kaestner,et al.  Spatiotemporal computed tomography of dynamic processes , 2011 .

[7]  A. Bojarevičs,et al.  Experiments on liquid metal flow induced by a rotating magnetic dipole , 2010 .

[8]  Shoji Taniguchi,et al.  Application of Pinch Force to the Separation of Inclusion Particles from Liquid Steel , 1994 .

[9]  A. Ono,et al.  VISUALIZATION OF STREAK LINES IN LIQUID METAL BY NEUTRON RADIOGRAPHY , 1994 .

[10]  Zach DeVito,et al.  Opt , 2017 .

[11]  Bernard Nacke,et al.  Analysis of experimental and simulation data for the liquid metal flow in a cylindrical vessel , 2007 .

[12]  Yasushi Takeda,et al.  Measurement of velocity profile of mercury flow by ultrasound doppler shift method , 1987 .

[13]  V. Chevrier,et al.  X-ray fluoroscopy observations of bubble formation and separation at a metal-slag interface , 2000 .

[14]  A. Jakovics,et al.  Modeling of the turbulent flow in induction furnaces , 2006 .

[15]  Y Saito,et al.  Velocity field measurement in gas-liquid metal two-phase flow with use of PIV and neutron radiography techniques. , 2004, Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine.

[16]  Andris Jakovics,et al.  Neutron Radiography Visualization of Solid Particles in Stirring Liquid Metal , 2015 .

[17]  Sven Eckert,et al.  Visualization of Liquid Metal Two-phase Flows in a Physical Model of the Continuous Casting Process of Steel , 2014, Metallurgical and Materials Transactions B.

[18]  Peter D. Lee,et al.  Synchrotron radiographic studies of ultrasonic melt processing of metal matrix nano composites , 2016 .

[19]  N Terzija,et al.  Visualization of the Flow in a Mold of Continuous Casting by Contactless Inductive Flow Tomography and Mutual Inductance Tomography , 2014 .

[20]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[21]  Andrew G. Glen,et al.  APPL , 2001 .

[22]  John L. Campbell,et al.  Effects of runner system design on the mechanical strength of Al-7Si-Mg alloy castings , 2003 .