Asymmetry of Velocity Increments in Fully Developed Turbulence and the Scaling of Low-Order Moments

K. R. Sreenivasan; S. I. Vainshtein; R. Bhiladvala; I. San Gil; S. Chen; N. Cao

doi:10.1103/PhysRevLett.77.1488

Asymmetry of Velocity Increments in Fully Developed Turbulence and the Scaling of Low-Order Moments

K. R. Sreenivasan, S. I. Vainshtein, R. Bhiladvala, I. San Gil, S. Chen, N. Cao

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

Abstract

A study is made of the scaling of the positive part (PP) and the negative part (NP) of velocity increments in turbulent pipe flow and in simulated homogeneous turbulence in a box. For moment orders above unity, the moments of NP are larger than those of PP for all separation distances, and the scaling exponents for PP are larger than those for NP. For moment orders below unity, the absolute value of the velocity increment and of NP, as well as PP, possess scaling exponents which vary linearly with the moment order q, though apparently greater than q/3. 1996

Original language	English (US)
Pages (from-to)	1488-1491
Number of pages	4
Journal	Physical Review Letters
Volume	77
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.77.1488
State	Published - 1996

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General Physics and Astronomy

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10.1103/PhysRevLett.77.1488

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abstract = "A study is made of the scaling of the positive part (PP) and the negative part (NP) of velocity increments in turbulent pipe flow and in simulated homogeneous turbulence in a box. For moment orders above unity, the moments of NP are larger than those of PP for all separation distances, and the scaling exponents for PP are larger than those for NP. For moment orders below unity, the absolute value of the velocity increment and of NP, as well as PP, possess scaling exponents which vary linearly with the moment order q, though apparently greater than q/3. 1996",

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AU - Bhiladvala, R.

AU - San Gil, I.

AU - Chen, S.

AU - Cao, N.

PY - 1996

Y1 - 1996

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AB - A study is made of the scaling of the positive part (PP) and the negative part (NP) of velocity increments in turbulent pipe flow and in simulated homogeneous turbulence in a box. For moment orders above unity, the moments of NP are larger than those of PP for all separation distances, and the scaling exponents for PP are larger than those for NP. For moment orders below unity, the absolute value of the velocity increment and of NP, as well as PP, possess scaling exponents which vary linearly with the moment order q, though apparently greater than q/3. 1996

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Asymmetry of Velocity Increments in Fully Developed Turbulence and the Scaling of Low-Order Moments

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