Generation of Sheared Plasma Flow in a Linear Device

The sheared mean flows and toroidal intrinsic rotations are found to be very important to tokamak plasmas, but their origins are not well understood yet. To get a clear understanding of the mechanism of plasma flow generation, we develop a new 3D code to simulate electrostatic plasma turbulence in linear devices. The code uses drift-reduced Braginskii equations and can self-consistently evolve global full density, pressure, vorticity and parallel velocities. A sheared azimuthal flow is found without any momentum input. The possible mechanisms of the generation and saturation of the azimuthal flow will be discussed.