Magnetic instability between miscible fluids in a Hele-Shaw cell - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Article Dans Une Revue Magnetohydrodynamics c/c of Magnitnaia Gidrodinamika Année : 2008

Magnetic instability between miscible fluids in a Hele-Shaw cell

Résumé

We show experimentally the existence of a magnetic instability between two miscible fluids. The sample is an aqueous ferrofluid. At time t = 0, the ferrofluid and water are put into contact in a Hele–Shaw cell and then submitted to a homogeneous magnetic field perpendicular to the cell. Above a threshold value of the magnetic field a fingering instability is observed at the diffuse interface, with fingers growing with time. A wavelength can be defined as the mean distance between fingers. This wavelength in the linear regime is approximatively equal to the thickness of the cell.
Fichier principal
Vignette du fichier
document.pdf (864.72 Ko) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-00356683 , version 1 (30-05-2023)

Licence

Paternité

Identifiants

Citer

Caroline Derec, Philippe Boltenhagen, Sophie Neveu, Jean-Claude Bacri. Magnetic instability between miscible fluids in a Hele-Shaw cell. Magnetohydrodynamics c/c of Magnitnaia Gidrodinamika, 2008, 44 (2), pp.135-142. ⟨10.22364/mhd.44.2.6⟩. ⟨hal-00356683⟩
35 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More