EDUCTION OF COHERENT STRUCTURES IN THE TURBULENT PLANE WAKE.

M. Hayakawa; Fazle Hussain

EDUCTION OF COHERENT STRUCTURES IN THE TURBULENT PLANE WAKE.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

A new technique is developed for the eduction of large-scale coherent structures in fully-turbulent shear flows without any auxiliary reference signal. The eduction scheme is based on the recognition of large-scale vorticity, i. e. the key coherent structure property itself. With this method, coherent structures are educed in the nearly self-preserving region of the turbulent wake of a circular cylinder at a Reynolds number of 1. 3 multiplied by 10**4. Topological features of the coherent structure and the associated incoherent turbulence characteristics demonstrate the significant role of vortex stretching at the 'saddle' in entrainment, mixing and turbulence production.

Original language	English
Title of host publication	Unknown Host Publication Title
State	Published - Dec 1 1985

ASJC Scopus subject areas

Engineering(all)

Cite this

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title = "EDUCTION OF COHERENT STRUCTURES IN THE TURBULENT PLANE WAKE.",

abstract = "A new technique is developed for the eduction of large-scale coherent structures in fully-turbulent shear flows without any auxiliary reference signal. The eduction scheme is based on the recognition of large-scale vorticity, i. e. the key coherent structure property itself. With this method, coherent structures are educed in the nearly self-preserving region of the turbulent wake of a circular cylinder at a Reynolds number of 1. 3 multiplied by 10**4. Topological features of the coherent structure and the associated incoherent turbulence characteristics demonstrate the significant role of vortex stretching at the 'saddle' in entrainment, mixing and turbulence production.",

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N2 - A new technique is developed for the eduction of large-scale coherent structures in fully-turbulent shear flows without any auxiliary reference signal. The eduction scheme is based on the recognition of large-scale vorticity, i. e. the key coherent structure property itself. With this method, coherent structures are educed in the nearly self-preserving region of the turbulent wake of a circular cylinder at a Reynolds number of 1. 3 multiplied by 10**4. Topological features of the coherent structure and the associated incoherent turbulence characteristics demonstrate the significant role of vortex stretching at the 'saddle' in entrainment, mixing and turbulence production.

AB - A new technique is developed for the eduction of large-scale coherent structures in fully-turbulent shear flows without any auxiliary reference signal. The eduction scheme is based on the recognition of large-scale vorticity, i. e. the key coherent structure property itself. With this method, coherent structures are educed in the nearly self-preserving region of the turbulent wake of a circular cylinder at a Reynolds number of 1. 3 multiplied by 10**4. Topological features of the coherent structure and the associated incoherent turbulence characteristics demonstrate the significant role of vortex stretching at the 'saddle' in entrainment, mixing and turbulence production.

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M3 - Conference contribution

AN - SCOPUS:0022281044

BT - Unknown Host Publication Title

ER -

EDUCTION OF COHERENT STRUCTURES IN THE TURBULENT PLANE WAKE.

Abstract

ASJC Scopus subject areas

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