Bifurcations of a plane parallel flow with Kolmogorov forcing
نویسندگان
چکیده
We study the primary bifurcations of a plane parallel flow in channel with Kolmogorov forcing. find new type bifurcation both oscillation frequency and amplitude growing mode being zero at threshold. call this stationary drift bifurcation. The laminar steady can display different types depending on forcing wave number base flow. This is contrast to case doubly periodic boundary conditions for which stationary.
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ژورنال
عنوان ژورنال: Physical review fluids
سال: 2021
ISSN: ['2469-9918', '2469-990X']
DOI: https://doi.org/10.1103/physrevfluids.6.103902