A glimpse of fluid turbulence from the molecular scale

Type
Article

Authors
Komatsu, Teruhisa S.
Matsumoto, Shigenori
Shimada, Takashi
Ito, Nobuyasu

KAUST Grant Number
KUK-I1-005-04

Online Publication Date
2014-08-06

Print Publication Date
2014-08

Date
2014-08-06

Abstract
Large-scale molecular dynamics (MD) simulations of freely decaying turbulence in three-dimensional space are reported. Fluid components are defined from the microscopic states by eliminating thermal components from the coarse-grained fields. The energy spectrum of the fluid components is observed to scale reasonably well according to Kolmogorov scaling determined from the energy dissipation rate and the viscosity of the fluid, even though the Kolmogorov length is of the order of the molecular scale. © 2014 The Authors.

Citation
Komatsu TS, Matsumoto S, Shimada T, Ito N (2014) A glimpse of fluid turbulence from the molecular scale. International Journal of Modern Physics C 25: 1450034. Available: http://dx.doi.org/10.1142/S012918311450034X.

Acknowledgements
We wish to thank M. Miyama and Y. Murase for helpful advices. Numerical simulations were partly carried out by the use of the Plasma Simulator at the National Institute for Fusion Science and supported by the NIFS Collaboration Research programs (NIFS10KNSS014). This work was partly supported by Award No. KUK-I1-005-04 made by King Abdullah University of Science and Technology (KAUST).

Publisher
World Scientific Pub Co Pte Lt

Journal
International Journal of Modern Physics C

DOI
10.1142/S012918311450034X

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