Suslov, Sergey A. and Bozhko, Alexandra A. and Putin, Gennady F. (2008) Thermo-magneto-convective instabilities in a vertical layer of ferro-magnetic fluid. In: XXXVI International Conference Advanced Problems in Mechanics, 6-10 Jul 2008, Repino, Russia.
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We study convection in a vertical layer of ferro-magnetic fluid heated from the side and subject to a transverse magnetic field. It is found that the subsequent fluid motion is caused by interacting thermo-gravitational and thermo-magnetic mechanisms. Our experiments and computations show that the excitation of magneto-convection leads to the formation of vertically aligned stationary rolls, while gravitational convection results in horizontal rolls corresponding to a pair of counter-propagating thermal waves. The interaction of these instability modes leads to a wide spectrum of experimentally observed flow patterns including stationary rolls and standing waves of various spatial orientations. A comprehensive stability map is computed and compared with experimental flow visualisations. Disturbance energy is analysed to achieve a deeper insight into the physical mechanisms driving the fluid motion.
|Item Type:||Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)|
|Additional Information:||Official reference: Suslov, S.A., Bozhko, A.A. and Putin, G.F., Thermo-magneto-convective instabilities in a vertical layer of a ferro-magnetic fluid, Proceedings of the APM2008: XXXVI Summer School on 'Advanced Problems in Mechanics', pp.~644--651. St.Petersburg (Repino), Russia. 6--10 July, 2008.|
|Uncontrolled Keywords:||ferro-colloid, magneto-convection|
|Subjects:||240000 Physical Sciences > 240500 Classical Physics > 240502 Fluid Physics|
|Depositing User:||Dr Sergey Suslov|
|Date Deposited:||27 Dec 2009 09:19|
|Last Modified:||02 Jul 2013 23:06|
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