OBSERVATIONS OF THE FORMATION OF STREAMWISE VORTICES

Heist , David K.; Na, Yang; Hanratty, Thomas J.

Turbulence and Shear Flow Phenomena -1 First International Symposium

ISBN Imprimer: 1-56700-135-1

OBSERVATIONS OF THE FORMATION OF STREAMWISE VORTICES

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David K. Heist Department of Chemical Engineering University of Illinois Urbana, Illinois 61801, USA

Yang Na Department of Chemical Engineering University of Illinois Urbana, Illinois 61801, USA

Thomas J. Hanratty Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign Urbana, Illinois 61801, USA

Résumé

Streamwise flow-oriented vortices play an important, if not dominant, role in generating Reynolds stresses. A new mechanism has been identified for forming these vortices. This involves the turning of spanwise arch vortices that occur at locations where the streamwise velocity profile develops a strong inflection.

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