Bifurcation structure of unstable periodic orbits in plane Couette flow with the Smagorinsky model
نویسندگان
چکیده
To study the dynamical properties of plane Couette turbulence, this paper describes unstable periodic orbits (UPOs) in a large eddy simulation (LES) system with Smagorinsky-type viscosity model. At moderately high Reynolds number, UPO present possesses spanwise vortices central region channel, which seem to be caused by streak instability. These stretched are shown enhance transfer streamwise turbulent momentum, as developed near-wall turbulence.
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ژورنال
عنوان ژورنال: Physical review fluids
سال: 2021
ISSN: ['2469-9918', '2469-990X']
DOI: https://doi.org/10.1103/physrevfluids.6.084608