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Conditional vorticity budget of coherent and incoherent flow contributions in fully developed homogeneous isotropic turbulence

Title data

Wilczek, Michael ; Kadoch, Benjamin ; Schneider, Kai ; Friedrich, Rudolf ; Farge, Marie:
Conditional vorticity budget of coherent and incoherent flow contributions in fully developed homogeneous isotropic turbulence.
In: Physics of Fluids. Vol. 24 (2012) Issue 3 . - No. 035108.
ISSN 1089-7666
DOI: https://doi.org/10.1063/1.3694807

Abstract in another language

We investigate the conditional vorticity budget of fully developed three-dimensional homogeneous isotropic turbulence with respect to coherent and incoherent flow contributions. The coherent vorticity extraction based on orthogonal wavelets allows to decompose the vorticity field into coherent and incoherent contributions, of which the latter are noise-like. The impact of the vortex structures observed in fully developed turbulence on statistical balance equations is quantified considering the conditional vorticity budget. The connection between the basic structures present in the flow and their statistical implications is thereby assessed. The results are compared to those obtained for large-and small-scale contributions using a Fourier decomposition, which reveals pronounced differences. (C) 2012 American Institute of Physics.

Further data

Item Type: Article in a journal
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: 18 Feb 2022 08:45
Last Modified: 30 Aug 2022 13:21
URI: https://eref.uni-bayreuth.de/id/eprint/67565