Guichou, Rafaël and Ayroles, Hervé
and Zamansky, Rémi
and Bergez, Wladimir
and Tordjeman, Philippe
and Paumel, Kevin
Perturbation of eddy-currents by one inclusion in liquid metal.
(2019)
Journal of Applied Physics, 125 (9). 1-6. ISSN 0021-8979
|
(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 900kB |
Official URL: https://doi.org/10.1063/1.5055062
Abstract
In this article, we present an analytical model to calculate the perturbation of the magnetic vector potential due to a non-conducting inclusion in a liquid metal translated at constant velocity. The model is valid for a low magnetic Reynolds number, Rem, and a low shielding parameter, Sω. We establish that the first order perturbation of the vector potential can be directly obtained from the value of the unperturbed eddy-current calculated at the location of the inclusion. An ECFM (Eddy-Current FlowMeter) device has been designed to validate the model and to study the frequency effects of the eddy-current and the volume of one inclusion and its location. We observe a good agreement between the model predictions and experimental data within the limit of the validity of the model. Based on scaling analysis, we show that a unique relation exists between the perturbation of the emf (electromotive force) measured with the ECFM and the volume of the inclusion and its location, which reflects the self-similarity of the model solution.
Item Type: | Article |
---|---|
HAL Id: | hal-02134624 |
Audience (journal): | International peer-reviewed journal |
Uncontrolled Keywords: | |
Institution: | French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA (FRANCE) French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
Laboratory name: | |
Funders: | Commissariat à l'Énergie Atomique et aux Énergies Alternatives - CEA (FRANCE) |
Statistics: | download |
Deposited On: | 16 May 2019 09:00 |
Repository Staff Only: item control page