Lagrangian statistics from direct numerical simulations of isotropic turbulence

  title={Lagrangian statistics from direct numerical simulations of isotropic turbulence},
  author={P. K. Yeung and Stephen B. Pope},
  journal={Journal of Fluid Mechanics},
  pages={531 - 586}
  • P. YeungS. Pope
  • Published 1 October 1989
  • Physics, Environmental Science
  • Journal of Fluid Mechanics
A comprehensive study is reported of the Lagrangian statistics of velocity, acceleration, dissipation and related quantities, in isotropic turbulence. High-resolution direct numerical simulations are performed on 643 and 1283 grids, resulting in Taylor-scale Reynolds numbers Rλ in the range 38-93. The low-wavenumber modes of the velocity field are forced so that the turbulence is statistically stationary. Using an accurate numerical scheme, of order 4000 fluid particles are tracked through the… 

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