Effect of Plasma Flow Velocity Shear on Fluctuation and Structure Formation 2. Effect and Production Mechanism of Flow Velocity Shear in Toroidal Plasmas

Abstract

Production mechanism of spontaneous plasma flow and flow velocity shear in the toroidal plasma is described. The plasma flow parallel to the magnetic field is produced by the radial electric field through the viscosities in the plasma. The observation of plasma flow driven by the thermodynamic force such as pressure gradient are presented. The effect of flow velocity shear on the transport, which determines the pressure profiles, is also discussed.