Conditional velocity pdf in 3-D turbulence.

Yves Gagne , Muriel Marchand , Bernard Castaing

It is shown that the probability density functions of velocity increments at small scale in turbulent flows turn to an universal (Gaussian) shape when conditioned to a precisely defined energy transfer rate εl. The standard deviation σ(εl) of this distribution depends on εl following a Kolmogorov like relation σ3 = C εl.l with a Reynolds number dependent coefficient C.

Domaines: Articles anciens

Yves Gagne, Muriel Marchand, Bernard Castaing. Conditional velocity pdf in 3-D turbulence.. Journal de Physique II, 1994, 4 (1), pp.1-8. ⟨10.1051/jp2:1994104⟩. ⟨jpa-00247941⟩