Convection of a ferrofluid in an alternating magnetic field |
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Authors: | A V Belyaev B L Smorodin |
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Institution: | (1) Perm’ State University, Perm’, 614990, Russia |
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Abstract: | Parametric convective instability of a horizontal layer of a homogeneous ferrofluid under the action of an alternating magnetic
field is studied. A case with rigid boundaries is considered. Convection thresholds are found. In an alternating magnetic
field with a zero mean value, perturbations are found to have a synchronous character. These perturbations, however, can belong
to different classes, because they depend on the temperature difference on the layer boundaries, the layer thickness, the
frequency and amplitude of the alternating external field, and the physical properties of the ferrofluid.
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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 50, No. 4, pp. 18–27, July–August, 2009. |
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Keywords: | ferrofluid thermomagnetic instability parametric convection |
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