at Google ScholarTitle data
Wilczek, Michael ; Friedrich, Rudolf:
A Langevin equation for the turbulent vorticity.
In: Peinke, Joachim ; Oberlack, Martin ; Talamelli, Alessandro
(ed.):
Progress in Turbulence III : proceedings of the iTi Conference in Turbulence 2008. -
Berlin ; Heidelberg
: Springer
,
2010
. - pp. 255-258
. - (Springer Proceedings in Physics
; 131
)
ISBN 978-3-642-02224-1
DOI: https://doi.org/10.1007/978-3-642-02225-8_62
Abstract in another language
The vorticity field of fully developed turbulence displays a complex spatial structure consisting of a large number of entangled filamentary vortices (see illustration). As a consequence, the PDF of the vorticity shows a highly non-Gaussian shape with pronounced tails. In the present work a kinetic theory for the turbulent vorticity is presented. Under certain conditions the arising equation may be interpreted as a Fokker-Planck equation giving rise to a Langevin model. The appearing unknown conditional averages are estimated from direct numerical simulations. The Langevin model is shown to reproduce the single point vorticity PDF.
Further data
| Item Type: | Article in a book |
|---|---|
| Refereed: | Yes |
| Institutions of the University: | Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics I > Chair Theoretical Physics I - Univ.-Prof. Dr. Michael Wilczek Profile Fields > Advanced Fields > Nonlinear Dynamics Faculties Faculties > Faculty of Mathematics, Physics und Computer Science Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics I Profile Fields Profile Fields > Advanced Fields |
| Result of work at the UBT: | No |
| DDC Subjects: | 500 Science > 530 Physics |
| Date Deposited: | 23 Feb 2022 10:30 |
| Last Modified: | 23 Feb 2022 10:30 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/67578 |