Acceleration correlations and pressure structure functions in high-reynolds number turbulence.

Acceleration correlations and pressure structure functions in high-reynolds number turbulence. Research Abstract Details 

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Acceleration correlations and pressure structure functions in high-reynolds number turbulence. Abstract Text:

Haitao Xu,Nicholas T Ouellette,Dario Vincenzi,Eberhard Bodenschatz,Haitao Xu,Nicholas T Ouellette,Dario Vincenzi,Eberhard Bodenschatz,

We present measurements of fluid particle accelerations in turbulent water flow between counterrotating disks using three-dimensional Lagrangian particle tracking. By simultaneously following multiple particles with sub-Kolmogorov-time-scale temporal resolution, we measured the spatial correlation of fluid particle acceleration at Taylor microscale Reynolds numbers between 200 and 690. We also obtained indirect, nonintrusive measurements of the Eulerian pressure structure functions by integrating the acceleration correlations. Our measurements are in good agreement with the theoretical predictions of the acceleration correlations and the pressure structure function in isotropic high-Reynolds number turbulence by Obukhov and Yaglom in 1951 [Prikl. Mat. Mekh. 15, 3 (1951)]. The measured pressure structure functions display K41 scaling in the inertial range.

Acceleration correlations and pressure structure functions in high-reynolds number turbulence. Publishing Authors By Initials

H Xu,NT Ouellette,D Vincenzi,E Bodenschatz,H Xu,NT Ouellette,D Vincenzi,E Bodenschatz,

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Acceleration correlations and pressure structure functions in high-reynolds number turbulence. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Physical review letters

VOLUME: 99

Page Numbers: 204501

Journal Abbreviation: Phys. Rev. Lett.

ISSN: 0031-9007

DAY: 14

MONTH: 11

YEAR: 2007

Acceleration correlations and pressure structure functions in high-reynolds number turbulence. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Acceleration correlations and pressure structure functions in high-reynolds number turbulence.

AFFILIATION: International Collaboration for Turbulence Research and Max Planck Institute for Dynamics and Self-Organization, D-37077 Göttingen, Germany.

Country: United States

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MEDLINETA: Phys Rev Lett

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