application of magnetohydrodynamics

[abdelwahab]

MHD science study the effect of electromagnetic field on the
conducting fluid especially the effect of magnetic field on these
fluid. MHD intersted by two factors , the first, when the magetic
field pass through the conducting fluid the induced current through
the fluid produce the magnetic field which cancel the applied field
and these field called frozen magnetic field.

the second, when the conducting fluid pass through the magnetic field
the lines of field out side the fluid and the induced current which
result from the fluid produce magnetic field and these field
reinforcement the applied field.

the force which result from these field called lorentz force and these
force equal JXB. J called the current density and equal the
conductivity multiplied by the magnetic induction (B) and the velosity
of the fluid.

the equations which uses in these science are the conservation of
momentum and mass and also maxwell equations.

MHD used in many application such as the studying of plasma,engenering
science,accelerator,power generator and the studying of polymers such
as polymer solution and polymer melts.MHD used also in stdying of the
propertisese of the blood.by using MHD we can knew any defect in the
blood such as clotting and bleeding and also we able to cure these
defect.
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