University of Illinois Urbana-Champaign

Failure of kolmogorov refined similarity hypothesis in fluid turbulence

Thoroddsen, Sigurdur T.

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https://hdl.handle.net/2142/112445

Description

Title
Failure of kolmogorov refined similarity hypothesis in fluid turbulence
Author(s)
Thoroddsen, Sigurdur T.
Issue Date
1994-05
Keyword(s)
  • Kolmogorov's Refined Similarity Hypothesis
  • Fluid Turbulence
Abstract
Experiments in high Reynolds number turbulence demonstrate the failure of Kolmogorov's Refined Similarity Hypothesis (RSH). Previous experimental support for the hypothesis is shown to be distorted by the severe simplifications used in estimating the turbulence energy dissipation, which has invariably been based only on the streamwise gradient of the streamwise velocity component. However, when the dissipation is estimated by the streamwise gradient of a transverse velocity component the dependence between l∆ᶙI and (re*r)1/3 all but disappears. This dependence is required for the hypothesis to be valid.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 753
  • 1994-6009
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112445
Copyright and License Information
Copyright 1994 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.