Acta Mechanica Sinica

, Volume 20, Issue 1, pp 113–116 | Cite as

On the evolution of decaying isotropic turbulence

  • Meng Qingguo
Article

Abstract

A direct numerical simulation is performed on 2563 grids for decaying isotropic turbulence. The total kinematic energy, Taylor micro-scale, Taylor micro-scale Reynolds number and the velocity derivative skewness are calculated. The snapshots of energy spectra and energy transfer spectra are plotted. These measurements verify the DIA predictions: decaying isotropic turbulence has the energy propagation and occupies the final decay periods. The skewness remains to some level with small variation even in the final decay period.

Key Words

Decaying isotropic turbulence direct numerical simulation DIA 

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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 2004

Authors and Affiliations

  • Meng Qingguo
    • 1
  1. 1.Department of Mathematical and Physical SciencesNational Nature Science Foundation of ChinaBeijingChina

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