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Abstract:

We examine turbulent flows in the presence of solid-body rotation and helical forcing in the framework of stochastic Schramm-Löwner evolution (SLE) curves. The data stem from a run with 15363 grid points, with Reynolds and Rossby numbers of, respectively, 5100 and 0.06. We average the parallel component of the vorticity in the direction parallel to that of rotation and examine the resulting ω z field for scaling properties of its zero-value contours. We find for the first time for three-dimensional fluid turbulence evidence of nodal curves being conformal invariant, belonging to a SLE class with associated Brownian diffusivity κ=3.6±0.1. SLE behavior is related to the self-similarity of the direct cascade of energy to small scales and to the partial bidimensionalization of the flow because of rotation. We recover the value of κ with a heuristic argument and show that this is consistent with several nontrivial SLE predictions. © 2011 American Physical Society.

Registro:

Documento: Artículo
Título:Conformal invariance in three-dimensional rotating turbulence
Autor:Thalabard, S.; Rosenberg, D.; Pouquet, A.; Mininni, P.D.
Filiación:Computational and Information Systems Laboratory, NCAR, P.O. Box 3000, Boulder, CO 80307, United States
CEA Saclay, L'Orme les Merisiers, France
Departamento de Física, Facultad de Ciencias Exactas y Naturales, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Brownian diffusivity; Conformal invariance; Fluid turbulence; Grid points; Nodal curves; Parallel component; Reynolds; Rossby numbers; Rotating turbulence; Scaling properties; Self-similarities; Small scale; Solid-body rotation; Conformal mapping; Three dimensional; Turbulence; Rotation
Año:2011
Volumen:106
Número:20
DOI: http://dx.doi.org/10.1103/PhysRevLett.106.204503
Título revista:Physical Review Letters
Título revista abreviado:Phys Rev Lett
ISSN:00319007
CODEN:PRLTA
PDF:https://bibliotecadigital.exactas.uba.ar/download/paper/paper_00319007_v106_n20_p_Thalabard.pdf
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v106_n20_p_Thalabard

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Citas:

---------- APA ----------
Thalabard, S., Rosenberg, D., Pouquet, A. & Mininni, P.D. (2011) . Conformal invariance in three-dimensional rotating turbulence. Physical Review Letters, 106(20).
http://dx.doi.org/10.1103/PhysRevLett.106.204503
---------- CHICAGO ----------
Thalabard, S., Rosenberg, D., Pouquet, A., Mininni, P.D. "Conformal invariance in three-dimensional rotating turbulence" . Physical Review Letters 106, no. 20 (2011).
http://dx.doi.org/10.1103/PhysRevLett.106.204503
---------- MLA ----------
Thalabard, S., Rosenberg, D., Pouquet, A., Mininni, P.D. "Conformal invariance in three-dimensional rotating turbulence" . Physical Review Letters, vol. 106, no. 20, 2011.
http://dx.doi.org/10.1103/PhysRevLett.106.204503
---------- VANCOUVER ----------
Thalabard, S., Rosenberg, D., Pouquet, A., Mininni, P.D. Conformal invariance in three-dimensional rotating turbulence. Phys Rev Lett. 2011;106(20).
http://dx.doi.org/10.1103/PhysRevLett.106.204503