High-Reynolds-number simulation of turbulent mixing

P. K. Yeung; D. A. Donzis; K. R. Sreenivasan

doi:10.1063/1.2001690

High-Reynolds-number simulation of turbulent mixing

P. K. Yeung, D. A. Donzis, K. R. Sreenivasan

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

Abstract

A brief report is given of a new 2048³ direct numerical simulation of the mixing of passive scalars with uniform mean gradients in forced, stationary isotropic turbulence. The Taylor-scale Reynolds number is close to 700 and Schmidt numbers of 1 and 1/8 are considered. The data provide the most convincing evidence to date for the inertial-convective scaling. Significant departures from small-scale isotropy are sustained in conventional measures. Subject to some stringent resolution requirements, the data suggest that commonly observed differences between the intermittency of energy and scalar dissipation rates may in part be a finite-Reynolds-number effect.

Original language	English (US)
Article number	081703
Pages (from-to)	1-4
Number of pages	4
Journal	Physics of Fluids
Volume	17
Issue number	8
DOIs	https://doi.org/10.1063/1.2001690
State	Published - Aug 2005

ASJC Scopus subject areas

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

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10.1063/1.2001690

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title = "High-Reynolds-number simulation of turbulent mixing",

abstract = "A brief report is given of a new 20483 direct numerical simulation of the mixing of passive scalars with uniform mean gradients in forced, stationary isotropic turbulence. The Taylor-scale Reynolds number is close to 700 and Schmidt numbers of 1 and 1/8 are considered. The data provide the most convincing evidence to date for the inertial-convective scaling. Significant departures from small-scale isotropy are sustained in conventional measures. Subject to some stringent resolution requirements, the data suggest that commonly observed differences between the intermittency of energy and scalar dissipation rates may in part be a finite-Reynolds-number effect.",

author = "Yeung, {P. K.} and Donzis, {D. A.} and Sreenivasan, {K. R.}",

note = "Funding Information: We gratefully acknowledge support from the National Science Foundation, via Grants No. CTS-0121030 (P.K.Y.) and No. CTS-0121007 (K.R.S.), and via resources provided by the NPACI partnership at the San Diego Supercomputer Center. The present calculations were made possible largely by a U.S. Department of Energy Office of Science INCITE Award (December 2003) of supercomputer time at the NERSC facility, where we were assisted especially by Dr. David Skinner and Cristina Siergerist. Valuable comments by Professor R. A. Antonia and Professor R. W. Bilger are also much appreciated.",

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doi = "10.1063/1.2001690",

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issn = "1070-6631",

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AU - Yeung, P. K.

AU - Donzis, D. A.

AU - Sreenivasan, K. R.

N1 - Funding Information: We gratefully acknowledge support from the National Science Foundation, via Grants No. CTS-0121030 (P.K.Y.) and No. CTS-0121007 (K.R.S.), and via resources provided by the NPACI partnership at the San Diego Supercomputer Center. The present calculations were made possible largely by a U.S. Department of Energy Office of Science INCITE Award (December 2003) of supercomputer time at the NERSC facility, where we were assisted especially by Dr. David Skinner and Cristina Siergerist. Valuable comments by Professor R. A. Antonia and Professor R. W. Bilger are also much appreciated.

PY - 2005/8

Y1 - 2005/8

N2 - A brief report is given of a new 20483 direct numerical simulation of the mixing of passive scalars with uniform mean gradients in forced, stationary isotropic turbulence. The Taylor-scale Reynolds number is close to 700 and Schmidt numbers of 1 and 1/8 are considered. The data provide the most convincing evidence to date for the inertial-convective scaling. Significant departures from small-scale isotropy are sustained in conventional measures. Subject to some stringent resolution requirements, the data suggest that commonly observed differences between the intermittency of energy and scalar dissipation rates may in part be a finite-Reynolds-number effect.

AB - A brief report is given of a new 20483 direct numerical simulation of the mixing of passive scalars with uniform mean gradients in forced, stationary isotropic turbulence. The Taylor-scale Reynolds number is close to 700 and Schmidt numbers of 1 and 1/8 are considered. The data provide the most convincing evidence to date for the inertial-convective scaling. Significant departures from small-scale isotropy are sustained in conventional measures. Subject to some stringent resolution requirements, the data suggest that commonly observed differences between the intermittency of energy and scalar dissipation rates may in part be a finite-Reynolds-number effect.

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ER -

High-Reynolds-number simulation of turbulent mixing

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