A glimpse of fluid turbulence from the molecular scale

Teruhisa S. Komatsu (), Shigenori Matsumoto, Takashi Shimada and Nobuyasu Ito
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Teruhisa S. Komatsu: Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan
Shigenori Matsumoto: Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan
Takashi Shimada: Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan
Nobuyasu Ito: Department of Applied Physics, The University of Tokyo, Hongo, Bunkyo, Tokyo 113-8656, Japan

International Journal of Modern Physics C (IJMPC), 2014, vol. 25, issue 08, 1-11

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.

Keywords: Molecular dynamics; turbulence; statistical mechanics; fluid dynamics; nanofluidics; 05.10.Ln; 47.11.Mn (search for similar items in EconPapers)
Date: 2014
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DOI: 10.1142/S012918311450034X

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