The Proceedings of the Fluids engineering conference
Online ISSN : 2424-2896
2016
Session ID : 1002
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A sustaining mechanism of an isolated turbulent band in plane channel flow
Takahiro KANAZAWAMasaki SHIMIZUGenta KAWAHARA
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CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

An isolated turbulent oblique band is investigated at a low bulk Reynolds number Rem = 440 in plane channel flow with a very large numerical domain. The downstream edge of the band propagates in the streamwise and spanwise directions to quasi-periodically generates disturbances which will be left behind to decay in time. Long time integration shows that the band keeps roughly constant length in time without continuously shrinking, extending or splitting, suggesting the presence of an isolated equilibrium turbulent band.

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© 2016 The Japan Society of Mechanical Engineers
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