TY - JOUR
T1 - Is there scaling in high-reynolds-number turbulence?
AU - Sreenivasan, Katepalli R.
AU - Dhruva, Brindesh
PY - 1998
Y1 - 1998
N2 - Turbulence velocity measurements have been made in the surface layer of the atmosphere at Taylor microscale Reynolds numbers between 10,000 and 20,000. Even at these high Reynolds numbers, the structure functions do not scale unambiguously. It is shown that the scaling improves significantly by implementing a plausible correction due to the mean shear. For second and fourth order structure functions, the exponents for the corrected data are close to those determined by extended self-similarity (ESS). ESS improves scaling enormously for all orders, and is used to obtain exponents for moment orders between -0.08 and 10. Anomaly prevails even for very low orders. A major qualitative conclusion is that it is difficult to discuss the scaling effectively without first understanding quantitatively the effects of finite shear and finite Reynolds numbers.
AB - Turbulence velocity measurements have been made in the surface layer of the atmosphere at Taylor microscale Reynolds numbers between 10,000 and 20,000. Even at these high Reynolds numbers, the structure functions do not scale unambiguously. It is shown that the scaling improves significantly by implementing a plausible correction due to the mean shear. For second and fourth order structure functions, the exponents for the corrected data are close to those determined by extended self-similarity (ESS). ESS improves scaling enormously for all orders, and is used to obtain exponents for moment orders between -0.08 and 10. Anomaly prevails even for very low orders. A major qualitative conclusion is that it is difficult to discuss the scaling effectively without first understanding quantitatively the effects of finite shear and finite Reynolds numbers.
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U2 - 10.1143/PTPS.130.103
DO - 10.1143/PTPS.130.103
M3 - Article
AN - SCOPUS:0032393088
SN - 0375-9687
SP - 103
EP - 120
JO - Progress of Theoretical Physics Supplement
JF - Progress of Theoretical Physics Supplement
IS - 130
ER -