Reevaluation of the experimental support for the Kolmogorov refined similarity hypothesis

S. T. Thoroddsen

doi:10.1063/1.868593

Reevaluation of the experimental support for the Kolmogorov refined similarity hypothesis

S. T. Thoroddsen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

Experiments in high Reynolds number turbulence call into question the experimental verification of Kolmogorov's refined similarity hypothesis. 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 |Δu_r| and (rε_r^&z.ast;) ^1/3 all but disappears. These results suggest that previous experimental support for the hypothesis may have been premature.

Original language	English (US)
Pages (from-to)	691-693
Number of pages	3
Journal	Physics of Fluids
Volume	7
Issue number	4
DOIs	https://doi.org/10.1063/1.868593
State	Published - 1995
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes
Computational Mechanics

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10.1063/1.868593

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abstract = "Experiments in high Reynolds number turbulence call into question the experimental verification of Kolmogorov's refined similarity hypothesis. 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 |Δur| and (rεr&z.ast;) 1/3 all but disappears. These results suggest that previous experimental support for the hypothesis may have been premature.",

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Reevaluation of the experimental support for the Kolmogorov refined similarity hypothesis

Abstract

ASJC Scopus subject areas

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