Cargando…
Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations
Three-dimensional calculations of the meniscus of a magnetic fluid placed around a current carrying vertical and cylindrical wire are presented. Based on the material properties of experimentally used magnetic fluids, the numerically determined menisci are compared with the experimentally measured o...
Autores principales: | , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040835/ https://www.ncbi.nlm.nih.gov/pubmed/32046243 http://dx.doi.org/10.3390/ma13030775 |
_version_ | 1783501073566138368 |
---|---|
author | Eißman, Paul-Benjamin Odenbach, Stefan Lange, Adrian |
author_facet | Eißman, Paul-Benjamin Odenbach, Stefan Lange, Adrian |
author_sort | Eißman, Paul-Benjamin |
collection | PubMed |
description | Three-dimensional calculations of the meniscus of a magnetic fluid placed around a current carrying vertical and cylindrical wire are presented. Based on the material properties of experimentally used magnetic fluids, the numerically determined menisci are compared with the experimentally measured ones reported by May. The comparison is made for a linear law of magnetisation as well as for the experimentally measured nonlinear magnetisation curve. Up to moderate strengths of the applied current ([Formula: see text] A), i.e., up to moderate strengths of the magnetic field close to the wire, the calculated profiles agree satisfyingly with the experimentally measured ones for a linear as well as for a nonlinear law of magnetisation. At a great strength of the applied current ([Formula: see text] A), i.e., at a large strength of the magnetic field close to the wire, the agreement is less good than in the range up to moderate strengths. Our analysis revealed that the numerically assumed isothermal conditions are not present in the experiment, particularly at the great strength of the applied current. A control of the temperature in the experiment and the implementation of a coupled thermal model in the numerics are considered the most relevant future steps for an improved agreement. |
format | Online Article Text |
id | pubmed-7040835 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-70408352020-03-09 Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations Eißman, Paul-Benjamin Odenbach, Stefan Lange, Adrian Materials (Basel) Article Three-dimensional calculations of the meniscus of a magnetic fluid placed around a current carrying vertical and cylindrical wire are presented. Based on the material properties of experimentally used magnetic fluids, the numerically determined menisci are compared with the experimentally measured ones reported by May. The comparison is made for a linear law of magnetisation as well as for the experimentally measured nonlinear magnetisation curve. Up to moderate strengths of the applied current ([Formula: see text] A), i.e., up to moderate strengths of the magnetic field close to the wire, the calculated profiles agree satisfyingly with the experimentally measured ones for a linear as well as for a nonlinear law of magnetisation. At a great strength of the applied current ([Formula: see text] A), i.e., at a large strength of the magnetic field close to the wire, the agreement is less good than in the range up to moderate strengths. Our analysis revealed that the numerically assumed isothermal conditions are not present in the experiment, particularly at the great strength of the applied current. A control of the temperature in the experiment and the implementation of a coupled thermal model in the numerics are considered the most relevant future steps for an improved agreement. MDPI 2020-02-08 /pmc/articles/PMC7040835/ /pubmed/32046243 http://dx.doi.org/10.3390/ma13030775 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Eißman, Paul-Benjamin Odenbach, Stefan Lange, Adrian Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title | Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title_full | Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title_fullStr | Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title_full_unstemmed | Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title_short | Meniscus of a Magnetic Fluid in the Field of a Current-Carrying Wire: Three-Dimensional Numerical Simulations |
title_sort | meniscus of a magnetic fluid in the field of a current-carrying wire: three-dimensional numerical simulations |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7040835/ https://www.ncbi.nlm.nih.gov/pubmed/32046243 http://dx.doi.org/10.3390/ma13030775 |
work_keys_str_mv | AT eißmanpaulbenjamin meniscusofamagneticfluidinthefieldofacurrentcarryingwirethreedimensionalnumericalsimulations AT odenbachstefan meniscusofamagneticfluidinthefieldofacurrentcarryingwirethreedimensionalnumericalsimulations AT langeadrian meniscusofamagneticfluidinthefieldofacurrentcarryingwirethreedimensionalnumericalsimulations |