Vorticity-induced magnetization of paramagnetic fluids in Taylor-Couette flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985891%3A_____%2F25%3A00639009" target="_blank" >RIV/67985891:_____/25:00639009 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/25:00639009

Výsledek na webu

<a href="https://doi.org/10.1016/j.jmmm.2025.173062" target="_blank" >https://doi.org/10.1016/j.jmmm.2025.173062</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2025.173062" target="_blank" >10.1016/j.jmmm.2025.173062</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vorticity-induced magnetization of paramagnetic fluids in Taylor-Couette flow

Popis výsledku v původním jazyce

We investigate the effect of differential rotation of a paramagnetic fluid on its magnetization state in a cylindrical geometry. Assuming a differentially rotating fluid in the classical Taylor–Couette problem, the magnitude of the vorticity can be controlled by changing the geometry parameters of a cylindrical vessel and/or the rotation rates of its walls. There are two special cases of the flow, a regime with zero vorticity within the rotating fluid and another one with vanishing total angular momentum of the fluid. We point out that vorticity can be the quantity responsible for the self-magnetization of rotating paramagnetic fluids. By analogy with the Barnett effect, we derive an expression for the dipole magnetic field generated by a differentially rotating fluid via the vorticity-mediated mechanism. We propose experimental verification of the mechanism, based on the measurement of generated magnetic fields.

Název v anglickém jazyce

Vorticity-induced magnetization of paramagnetic fluids in Taylor-Couette flow

Popis výsledku anglicky

We investigate the effect of differential rotation of a paramagnetic fluid on its magnetization state in a cylindrical geometry. Assuming a differentially rotating fluid in the classical Taylor–Couette problem, the magnitude of the vorticity can be controlled by changing the geometry parameters of a cylindrical vessel and/or the rotation rates of its walls. There are two special cases of the flow, a regime with zero vorticity within the rotating fluid and another one with vanishing total angular momentum of the fluid. We point out that vorticity can be the quantity responsible for the self-magnetization of rotating paramagnetic fluids. By analogy with the Barnett effect, we derive an expression for the dipole magnetic field generated by a differentially rotating fluid via the vorticity-mediated mechanism. We propose experimental verification of the mechanism, based on the measurement of generated magnetic fields.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

1873-4766

Svazek periodika

627

Číslo periodika v rámci svazku

Sept

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

173062

Kód UT WoS článku

001484920400001

EID výsledku v databázi Scopus

2-s2.0-105003656460