Natural solutal convection in magnetic fluids: First-order phasetransition aspect

Concentration stratification of magnetic fluids under the action of externalmagneticfield can disturb mechanical equilibrium in the system and causeintensive solutal convection. The current paper is devoted to the study of freesolutal convection in magnetic fluids undergoing first-order phase transi...

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Bibliographic Details
Published in:Physics of fluids (1994) 2016-10, Vol.28 (10)
Main Author: Ivanov, Aleksey S
Format: Article
Language:English
Subjects:
Computational fluid dynamics
Computer simulation
Convection
Diffraction
Fluid dynamics
Magnetic fluids
Phase transitions
Physics
Stratification
Online Access:Get full text
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Summary:Concentration stratification of magnetic fluids under the action of externalmagneticfield can disturb mechanical equilibrium in the system and causeintensive solutal convection. The current paper is devoted to the study of freesolutal convection in magnetic fluids undergoing first-order phase transition.Simulation of solutal convection in OpenFOAM package makes it possible to comparenumeric results with physical experiment observations. The numeric simulation of convectivehydrodynamic flows was carried out in the framework of several theories offirst-order phasetransition in ferrocolloids. The numerical results are comparedwith experimental observations in order to choose the theory which predicts mostaccurately the concentration stratification in magnetic fluidsundergoing magneto-controllable first-order phase transition.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4964377