Measurements of the turbulent energy dissipation rate

B. R. Pearson; P.-Å. Krogstad; W. van de Water

doi:10.1063/1.1445422

Measurements of the turbulent energy dissipation rate

B. R. Pearson, P.-Å. Krogstad, W. van de Water

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

133 Citations (Scopus)

Abstract

The one-dimensional surrogate for the dimensionless energy dissipation rate C_ε is measured in shear flows over a range of the Taylor microscale Reynolds number R_λ, 70≲R_λ≲1217. We recommend that C_ε should be defined with respect to an energy length scale derived from the turbulent energy spectrum. For R_λ≲300, a value of C_ε≈0.5 appears to be a good universal approximation for flow regions free of strong mean shear. The present results for C_ε support a key assumption of turbulence-the mean turbulent energy dissipation rate is finite in the limit of zero viscosity.

Original language	English
Pages (from-to)	1288-1290
Number of pages	3
Journal	Physics of Fluids
Volume	14
Issue number	3
DOIs	https://doi.org/10.1063/1.1445422
Publication status	Published - Mar 2002
Externally published	Yes

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10.1063/1.1445422

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Measurements of the turbulent energy dissipation rate

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