A computational analysis is performed to investigate
the suppression mechanism of magnetohydrodynamic (MHD)
instability. Three different techniques have been considered
which allow us to reduce the total growth of the instability:
1. doublecascades liner; 2. linear rotation and 3. externally
generated axial magnetic field. Double gas-puff with specifically
structured density: massive inner shell and light outer
one for a given current shape makes it possible to suppress
significantly the MHD instability evolution. Possible mechanism
of the instability dumping has been proposed. The load
design is being analyzed for the case of liner rotation
with initial angular velocity. Different values of the
velocities have been considered. The using of an external
magnetic field allows us to suppress the instability when
the field reaches the specified shape and optimal value.
The estimation of the fraction of magnetic energy and energy
of rotation in the full energy of the liner is done. The
influence of axial field on MHD instability growth is analyzed.