Universality of probability density functions in turbulent channel flow
- 1 May 1995
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 7 (5) , 1122-1129
- https://doi.org/10.1063/1.868553
Abstract
Probability density functions (PDFs) of the fluctuating velocity components, as well as their first and second derivatives, are calculated using data from the direct numerical simulations (DNS) of fully developed turbulent channel flow. It is observed that, beyond the buffer region, the PDF of each of these quantities (except for u,y), is independent of the distance from the channel wall. It is further observed that, beyond the buffer region, the PDFs are also independent of Reynolds number. Similar behavior is observed for the PDFs of the second derivatives. The pseudodissipation rate of kinetic energy exhibits lognormal behavior.Keywords
This publication has 7 references indexed in Scilit:
- Probability distribution functions in turbulent convectionPhysics of Fluids A: Fluid Dynamics, 1991
- Analytical Methods for the Development of Reynolds-Stress Closures in TurbulenceAnnual Review of Fluid Mechanics, 1991
- Lagrangian statistics from direct numerical simulations of isotropic turbulenceJournal of Fluid Mechanics, 1989
- Scale-dependent intermittency and coherence in turbulenceJournal of Scientific Computing, 1988
- Experiments on internal intermittency and fine-structure distribution functions in fully turbulent fluidJournal of Fluid Mechanics, 1971
- Structure functions of turbulence in the atmospheric boundary layer over the oceanJournal of Fluid Mechanics, 1970
- The nature of turbulent motion at large wave-numbersProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1949