LAUSR

The temporal evolution of the resistive pressure-gradient-driven mode in a sheared flow is investigated as a solution of the initial value problem by employing the sheared mode approach. It reveals the essential difference of the processes, which occur in the case of flows with velocity shear less than the growth rate of the instability in steady plasmas, with processes which occur in the flows with velocity shear larger than the growth rate. We found that the suppression of the turbulence by a sheared flow occurs only in the second case. In this case, the initial value scheme, which does not impose a priori any constraints on the form that solution may take, is necessary for the proper description of the temporal evolution and eventual suppression of the turbulence in a sheared flow.