  We present the results of the numerical simulations of the interaction
between a magnetized star and an imperfectly conducting accretion disk. To
analyze the ''star-disk'' interaction we numerically investigate the MHD
equations used Godunov-type high resolution numerical method. It was found that
the ''star-disk'' interaction occurs with quasi-periodic reconnection of the
magnetic field coronal loops and plasmoid ejections. In the case of the perfect
disk conductivity the evolution of the coronal magnetic field leads to the
periodic outflow of angular momentum from the disk. In the case of an
imperfectly conducting disk the configuration of the magnetic field is formed
such that the disk angular momentum carried by magnetic field gets balanced by
angular momentum carried by matter.
