## Abstract

Small-scale statistics in turbulent channel flow are studied by high resolution direct numerical simulations with the friction Reynolds number up to Re_{τ} = 2560. The second order velocity statistics in the inertial subrange of the log-low region are found to be not far from those predicted by Kolmogorov's universal equilibrium theory, although the agreement is not perfect. The shear parameter S* decreases with the distance y^{+} from the wall and S* ≲ 0.1 in y^{+} > 400 for large Re_{τ}, where S* is the ratio of the Kolmogorov time scale to the mean shear time scale. For larger Re_{τ}, the y ^{+}-dependence of S* is closer to a simple theoretical estimate in the log-low region.

Original language | English |
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Article number | 022016 |

Journal | Journal of Physics: Conference Series |

Volume | 318 |

Issue number | SECTION 2 |

DOIs | |

Publication status | Published - 2011 |

Externally published | Yes |

Event | 13th European Turbulence Conference, ETC13 - Warsaw, Poland Duration: Sep 12 2011 → Sep 15 2011 |

## ASJC Scopus subject areas

- Physics and Astronomy(all)