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Abstract:

While in classical turbulence helicity depletes nonlinearity and can alter the evolution of turbulent flows, in quantum turbulence its role is not fully understood. We present numerical simulations of the free decay of a helical quantum turbulent flow using the Gross-Pitaevskii equation at high spatial resolution. The evolution has remarkable similarities with classical flows, which go as far as displaying a dual transfer of incompressible kinetic energy and helicity to small scales. Spatiotemporal analysis indicates that both quantities are dissipated at small scales through nonlinear excitation of Kelvin waves and the subsequent emission of phonons. At the onset of the decay, the resulting turbulent flow displays polarized large scale structures and unpolarized patches of quiescence reminiscent of those observed in simulations of classical turbulence at very large Reynolds numbers. © 2017 American Physical Society.

Registro:

Documento: Artículo
Título:Dual cascade and dissipation mechanisms in helical quantum turbulence
Autor:Clark di Leoni, P.; Mininni, P.D.; Brachet, M.E.
Filiación:Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, IFIBA, CONICET, Ciudad Universitaria, Buenos Aires, 1428, Argentina
Lab. de Phys. Statistique de l'Ecl. Normale Sup. Associe Au CNRS et Aux Universites Paris 6 et 7, 24 Rue Lhomond, Paris Cedex 05, 75237, France
Año:2017
Volumen:95
Número:5
DOI: http://dx.doi.org/10.1103/PhysRevA.95.053636
Título revista:Physical Review A
Título revista abreviado:Phys. Rev. A
ISSN:24699926
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v95_n5_p_ClarkdiLeoni

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Citas:

---------- APA ----------
Clark di Leoni, P., Mininni, P.D. & Brachet, M.E. (2017) . Dual cascade and dissipation mechanisms in helical quantum turbulence. Physical Review A, 95(5).
http://dx.doi.org/10.1103/PhysRevA.95.053636
---------- CHICAGO ----------
Clark di Leoni, P., Mininni, P.D., Brachet, M.E. "Dual cascade and dissipation mechanisms in helical quantum turbulence" . Physical Review A 95, no. 5 (2017).
http://dx.doi.org/10.1103/PhysRevA.95.053636
---------- MLA ----------
Clark di Leoni, P., Mininni, P.D., Brachet, M.E. "Dual cascade and dissipation mechanisms in helical quantum turbulence" . Physical Review A, vol. 95, no. 5, 2017.
http://dx.doi.org/10.1103/PhysRevA.95.053636
---------- VANCOUVER ----------
Clark di Leoni, P., Mininni, P.D., Brachet, M.E. Dual cascade and dissipation mechanisms in helical quantum turbulence. Phys. Rev. A. 2017;95(5).
http://dx.doi.org/10.1103/PhysRevA.95.053636