抄録
Direct numerical simulation of a spectral method was performed to study the flow structure of the turbulent stripe in rotational plane Couette flows. Through the simulation, the turbulent stripes appear in the near-wall regions, while the turbulence become homogeneous near the channel center. The small scale structure is almost same in the entire channel except wall vicinity consisting of viscous sub-layer and buffer layer. The structures as high- and low-speed fluids are transferred downstream by mean velocity at each y-location, whereas the turbulent stripe moved downstream at constant velocity keeping its shape. Moreover, mean spanwise velocity is generated and is responsible for the decision of the stripe direction in this simulation.
