Journal of Engineering Physics and Thermophysics
is a translation of Inzhenerno-fizicheskii Zhurnal,
a publication of the Academic Scientific Complex
"A. V. Luikov Heat and Mass Transfer Institute"
of the National Academy of Sciences of Belarus
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PAIRWISE INTERACTION OF DROPS OF MAGNETIC
EMULSION UNDER THE ACTION OF ROTATING FIELD
B. Kashevskii
UDC 532.5:538.6
Consideration is given to the dynamics of a pair of drops of a magnetic
liquid that are suspended in a normal liquid with relatively low viscosity
under the action of a rotating field. Account is taken of hydrodynamic and
dipole-dipole interactions as well as of the electrodynamic torque due to
the finite relaxation time of magnetization of the magnetic liquid. It is
shown that hydrodynamic interaction leads to the formation of a rigid pair
in the rotating field and the electrodynamic moment of forces governs its
dynamics at large frequencies, leading to a growth that is linear in the
field frequency in the rotational velocity for the pair of drops, whereas
a pair of solid particles loses sensitivity to the field.
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