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The size of turbulent eddies close to a wall

✍ Scribed by Stephen L. Lyons; Christos Nikolaides; Thomas J. Hanratty

Publisher: American Institute of Chemical Engineers
Year: 1988
Tongue: English
Weight: 774 KB
Volume: 34
Category: Article
ISSN: 0001-1541
DOI: 10.1002/aic.690340606

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✦ Synopsis

A+ = 100, observed close to a wall in turbulent flows are believed to control the production of turbulence. A 2% D computer model developed by Nikolaides is used to explain the dimensionless spacing of these structures. The calculations suggest that the net production of turbulence in the viscous wall region is sensitive to changes in A+ in the neighborhood of A+ = 100. They indicate that the net production is negative for A+ < 85 and that for A+ = 93 the net production is large enough to supply the turbulent energy dissipated in the outer flow.

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