Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires
Introduction: The rotor is the mobile component of an electric motor. A wound rotor is composed primarily of a steel core with insulated copper wires wound around it, after which the winding is immersed into a liquid acrylate-based thermosetting resin bath whose role is to ensure the performance and...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Materials |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2023.1124176/full |
| _version_ | 1828001615459647488 |
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| author | Amélie Moisy Amélie Moisy Amélie Moisy Sébastien Comas-Cardona Nicolas Désilles Pascal Genevée Jere Kolehmainen |
| author_facet | Amélie Moisy Amélie Moisy Amélie Moisy Sébastien Comas-Cardona Nicolas Désilles Pascal Genevée Jere Kolehmainen |
| author_sort | Amélie Moisy |
| collection | DOAJ |
| description | Introduction: The rotor is the mobile component of an electric motor. A wound rotor is composed primarily of a steel core with insulated copper wires wound around it, after which the winding is immersed into a liquid acrylate-based thermosetting resin bath whose role is to ensure the performance and durability of the motor. This impregnation with resin between the wires occurs under controlled temperature settings to facilitate resin flow and polymerization. This process does not involve any pressurization to further facilitate resin flow between the wires; this suggests that, in addition to viscous effects, capillary and gravity forces play a significant role in the impregnation process.Methods: Our ultimate objective is to evaluate the quality of this impregnation. Doing so requires the characterization and simulation of a multi-material and multiphysics process in which heat transfer, polymerization kinetics, and resin flow are strongly coupled. This paper presents a fully coupled macroscopic multiphysics simulation of a unidirectional thermo-regulated capillary rise set-up.Discussion: The modeling choices made produced a good level of agreement with experimental data and enable explanation of a sudden change of regime observed at 120°C, which can be attributed to the polymerization and thermal gradients and their impact on fluid dynamics. |
| first_indexed | 2024-04-10T06:31:47Z |
| format | Article |
| id | doaj.art-4f0d3c61674c4efaafb9218fcbfd8832 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-10T06:31:47Z |
| publishDate | 2023-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-4f0d3c61674c4efaafb9218fcbfd88322023-03-01T06:27:48ZengFrontiers Media S.A.Frontiers in Materials2296-80162023-03-011010.3389/fmats.2023.11241761124176Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wiresAmélie Moisy0Amélie Moisy1Amélie Moisy2Sébastien Comas-Cardona3Nicolas Désilles4Pascal Genevée5Jere Kolehmainen6Nantes Université, Ecole Centrale Nantes, Centre National de la Recherche Scientifique, Institut de Recherche en Génie Civil et Mécanique, UMR 6183, Nantes, FranceINSA Rouen Normandie, Centre National de la Recherche Scientifique, Polymères, Biopolymères, Surfaces, UMR 6270, Saint Etienne du Rouvray, FranceRenault, Cléon, FranceNantes Université, Ecole Centrale Nantes, Centre National de la Recherche Scientifique, Institut de Recherche en Génie Civil et Mécanique, UMR 6183, Nantes, FranceINSA Rouen Normandie, Centre National de la Recherche Scientifique, Polymères, Biopolymères, Surfaces, UMR 6270, Saint Etienne du Rouvray, FranceRenault, Cléon, FranceRenault, Cléon, FranceIntroduction: The rotor is the mobile component of an electric motor. A wound rotor is composed primarily of a steel core with insulated copper wires wound around it, after which the winding is immersed into a liquid acrylate-based thermosetting resin bath whose role is to ensure the performance and durability of the motor. This impregnation with resin between the wires occurs under controlled temperature settings to facilitate resin flow and polymerization. This process does not involve any pressurization to further facilitate resin flow between the wires; this suggests that, in addition to viscous effects, capillary and gravity forces play a significant role in the impregnation process.Methods: Our ultimate objective is to evaluate the quality of this impregnation. Doing so requires the characterization and simulation of a multi-material and multiphysics process in which heat transfer, polymerization kinetics, and resin flow are strongly coupled. This paper presents a fully coupled macroscopic multiphysics simulation of a unidirectional thermo-regulated capillary rise set-up.Discussion: The modeling choices made produced a good level of agreement with experimental data and enable explanation of a sudden change of regime observed at 120°C, which can be attributed to the polymerization and thermal gradients and their impact on fluid dynamics.https://www.frontiersin.org/articles/10.3389/fmats.2023.1124176/fullimpregnationcapillary risecompositesmultiphysicscouplingmodeling |
| spellingShingle | Amélie Moisy Amélie Moisy Amélie Moisy Sébastien Comas-Cardona Nicolas Désilles Pascal Genevée Jere Kolehmainen Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires Frontiers in Materials impregnation capillary rise composites multiphysics coupling modeling |
| title | Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| title_full | Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| title_fullStr | Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| title_full_unstemmed | Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| title_short | Multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| title_sort | multiphysics simulation of an anisothermal reactive spontaneous capillary rise between electric rotor wires |
| topic | impregnation capillary rise composites multiphysics coupling modeling |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2023.1124176/full |
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