Dual cascade and dissipation mechanisms in helical quantum turbulence
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 spat...
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todo:paper_24699926_v95_n5_p_ClarkdiLeoni2023-10-03T16:41:34Z Dual cascade and dissipation mechanisms in helical quantum turbulence Clark di Leoni, P. Mininni, P.D. Brachet, M.E. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_24699926_v95_n5_p_ClarkdiLeoni |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
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. |
| format |
JOUR |
| author |
Clark di Leoni, P. Mininni, P.D. Brachet, M.E. |
| spellingShingle |
Clark di Leoni, P. Mininni, P.D. Brachet, M.E. Dual cascade and dissipation mechanisms in helical quantum turbulence |
| author_facet |
Clark di Leoni, P. Mininni, P.D. Brachet, M.E. |
| author_sort |
Clark di Leoni, P. |
| title |
Dual cascade and dissipation mechanisms in helical quantum turbulence |
| title_short |
Dual cascade and dissipation mechanisms in helical quantum turbulence |
| title_full |
Dual cascade and dissipation mechanisms in helical quantum turbulence |
| title_fullStr |
Dual cascade and dissipation mechanisms in helical quantum turbulence |
| title_full_unstemmed |
Dual cascade and dissipation mechanisms in helical quantum turbulence |
| title_sort |
dual cascade and dissipation mechanisms in helical quantum turbulence |
| url |
http://hdl.handle.net/20.500.12110/paper_24699926_v95_n5_p_ClarkdiLeoni |
| work_keys_str_mv |
AT clarkdileonip dualcascadeanddissipationmechanismsinhelicalquantumturbulence AT mininnipd dualcascadeanddissipationmechanismsinhelicalquantumturbulence AT brachetme dualcascadeanddissipationmechanismsinhelicalquantumturbulence |
| _version_ |
1807316442058588160 |