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Lagrangian velocity correlations in homogeneous isotropic turbulence

open access: yesLagrangian velocity correlations in homogeneous isotropic turbulence
The Lagrangian velocity autocorrelation and the time correlations for individual wave‐number bands are computed by direct numerical simulation (DNS) using the passive vector method (PVM), and the accuracy of the method is studied. It is found that the PVM is accurate when Kmax/kd?2 where Kmax is the maximum wave number carried in the simulation and kd ...
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