Evolution of turbulence in an oscillatory flow in a smooth-walled channel: a viscous secondary instability mechanism

J. A . Cosgrove; James Buick; S. J. Tonge

doi:10.1103/PhysRevE.68.026302

Evolution of turbulence in an oscillatory flow in a smooth-walled channel: a viscous secondary instability mechanism

J. A . Cosgrove, James Buick, S. J. Tonge

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Abstract

In this paper, a comparison is made of the evolution of turbulence in oscillatory channel flows with a zero-mean velocity in two and three dimensions, using the numerical technique of the lattice Boltzmann method. The results confirm a primary two-dimensional instability. Evidence is shown of a secondary, viscous three-dimensional instability mechanism acting in the oscillatory boundary layer, which is consistent with experimental observations.

Original language	English
Article number	026302
Pages (from-to)	026302
Journal	Physical Review E
Volume	68
Early online date	5 Aug 2003
DOIs	https://doi.org/10.1103/PhysRevE.68.026302
Publication status	Published - 2003

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Copyright 2003 by The American Physical Society
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title = "Evolution of turbulence in an oscillatory flow in a smooth-walled channel: a viscous secondary instability mechanism",

abstract = "In this paper, a comparison is made of the evolution of turbulence in oscillatory channel flows with a zero-mean velocity in two and three dimensions, using the numerical technique of the lattice Boltzmann method. The results confirm a primary two-dimensional instability. Evidence is shown of a secondary, viscous three-dimensional instability mechanism acting in the oscillatory boundary layer, which is consistent with experimental observations.",

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AB - In this paper, a comparison is made of the evolution of turbulence in oscillatory channel flows with a zero-mean velocity in two and three dimensions, using the numerical technique of the lattice Boltzmann method. The results confirm a primary two-dimensional instability. Evidence is shown of a secondary, viscous three-dimensional instability mechanism acting in the oscillatory boundary layer, which is consistent with experimental observations.

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DO - 10.1103/PhysRevE.68.026302

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Evolution of turbulence in an oscillatory flow in a smooth-walled channel: a viscous secondary instability mechanism

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