Effects of anticyclonic spanwise rotation on plane Couette flow at small Reynolds number

In this study, we investigated the effect of anticyclonic spanwise rotation on plane Couette flow at small Reynolds number Rew = 1300, defined by moving wall velocity, channel half-width, and kinematic viscosity direct numerical simulations using spectral method. We confirmed that typical number, mean velocity distribution became S-shape, a negative gradient appeared in centre. At significant decrease sweep event, i.e., inrush motion high-speed fluids toward wall, an increase ejection, outward away from were observed vicinity. addition, budget turbulent kinetic energy showed transport into vicinity was suppressed, dissipation rate there attenuated, which indicated relaminarization there. Finally, visualization instantaneous generated secondary swept small-scale vortices near wall.