Back to Search
Start Over
Typical form of characteristic function of two-point velocity distribution in homogeneous isotropic turbulence and its extension to the three-point version.
- Source :
-
AIP Advances . 2015, Vol. 5 Issue 3, p1-10. 10p. - Publication Year :
- 2015
-
Abstract
- A necessary and sufficient form of two-point velocity characteristic function to embody two-point velocity distribution in turbulence is constructed on the mathematical basis of homogeneity and isotropy. This is applied in the first equation (for one-point velocity probability density) of the Monin-Lundgren hierarchy to see its substantial effect on the dynamics of homogeneous isotropic turbulence, the pressure term in which then is proved to vanish, as argued in "One-point velocity statistics in decaying homogeneous isotropic turbulence," Phys. Rev. E 78, 066312 (2008). Furthermore, an approximate form of three-point velocity characteristic function is searched on this basis, so that we obtain a simple closed hierarchy at the second equation stage. Thereby a certain closure method for the hierarchy in homogeneous, isotropic turbulence is illuminated from a new point of view. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 21583226
- Volume :
- 5
- Issue :
- 3
- Database :
- Academic Search Index
- Journal :
- AIP Advances
- Publication Type :
- Academic Journal
- Accession number :
- 101881999
- Full Text :
- https://doi.org/10.1063/1.4914494