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Recent developments in the application of contactless inductive flow tomography

2018 International Applied Computational Electromagnetics Society Symposium (ACES), 2018
In many industrial processes dealing with liquid metals or semiconductors, the quality of the resulting product is directly affected by the flow of the melt. These melts are often too hot or too aggressive for direct flow measurement with conventional techniques.
Thomas Wondrak, Frank Stefani
exaly   +2 more sources

Recent progress on contactless inductive flow tomography

Proceedings in Applied Mathematics and Mechanics, 2009
AbstractThe contactless inductive flow tomography (CIFT) is a technique to reconstruct the velocity in electrically conducting melts using magnetic fields. One of its application could be the velocity reconstruction in the mould of the continuous casting process.
Thomas Wondrak, Frank Stefani
exaly   +3 more sources

Some methodological improvements of the contactless inductive flow tomography

International Journal of Applied Electromagnetics and Mechanics, 2009
The goal of contactless inductive flow tomography (CIFT) is the velocity reconstruction in electrically conducting melts which are used in many metallurgical and crystal growth applications. In this paper, we discuss some recent methodological improvements of this method, in particular the automatic search for an optimum regularisation parameter and ...
Thomas Wondrak, Frank Stefani
exaly   +3 more sources

Flow Control in the Model of a Continuous Caster by Using Contactless Inductive Flow Tomography

Minerals, Metals and Materials Series, 2019
The global flow pattern of liquid metal in the slab mold of a continuous caster is difficult to control, as it cannot be measured in real-time by conventional methods. Contactless inductive flow tomography (CIFT) can easily provide real-time information about the flow structure (double or single roll) and the angle of the jet coming out of the ...
Thomas Wondrak, Jaroslav Hlava, Frank Stefani   +2 more
exaly   +3 more sources

Singularity consideration in the integral equations for contactless inductive flow tomography

COMPEL - the International Journal for Computation and Mathematics in Electrical and Electronic Engineering, 2018
Purpose The contactless inductive flow tomography is a procedure that enables the reconstruction of the global three-dimensional flow structure of an electrically conducting fluid by measuring the flow-induced magnetic flux density outside the melt and by subsequently solving the associated linear inverse problem.
Thomas Wondrak, Frank Stefani
exaly   +3 more sources

Contactless inductive flow tomography for a model of continuous steel casting

Measurement Science and Technology, 2010
The contactless inductive flow tomography (CIFT) aims at reconstructing the velocity field in electrically conducting melts from externally measured induced magnetic fields. One of its possible applications is the velocity reconstruction in the continuous casting process.
Thomas Wondrak, Vladimir Galindo, Frank Stefani   +2 more
exaly   +3 more sources

Optimal sensor arrangement for Contactless Inductive Flow Tomography in the case of Rayleigh–Bénard convection

International Journal of Applied Electromagnetics and Mechanics, 2019
The Contactless Inductive Flow Tomography is a procedure that enables the reconstruction of the global flow structure of an electrically conducting fluid by measuring the flow induced magnetic field outside the melt and subsequently solving the associated linear inverse problem.
Thomas Wondrak, Vladimir Galindo, Frank Stefani   +2 more
exaly   +2 more sources

Theoretical and numerical approaches to the forward problem and sensitivity calculation of a novel contactless inductive flow tomography (CIFT)

Measurement Science and Technology, 2009
A completely contactless flow measurement technique based on the principle of EM induction measurements - contactless inductive flow tomography (CIFT) - has been previously reported by a team based at Forschungszentrum Dresden-Rossendorf (FZD).
Wuliang Yin, Anthony Peyton, Frank Stefani   +2 more
exaly   +2 more sources

Enhancing robustness and applicability of contactless inductive flow tomography

2015 IEEE SENSORS, 2015
Measuring the flow velocity in hot, chemically aggressive and opaque melts is a challenging task even for today's measurement techniques. The contactless inductive flow tomography (CIFT) could provide a solution by applying magnetic fields to an electrically conducting melt and measuring the small flow-induced magnetic perturbances outside of the ...
Ratajczak, M., Wondrak, T., Zürner, T., Stefani, F.   +3 more
openaire   +2 more sources

Increasing electromagnetic compatibility of Contactless Inductive Flow Tomography

2015 IEEE International Symposium on Electromagnetic Compatibility (EMC), 2015
In many metallurgical and silicon crystal growth applications the knowledge about the flow field of the respective liquid metals is vital for proper process management. The high temperatures and the opaqueness of those melts set severe restrictions on the applicable flow measurement methods.
Wondrak, T., Ratajczak, M., Gundrum, T., Stefani, F., Krauthäuser, H. G., Jacobs, R. T.   +5 more
openaire   +2 more sources