Local approach to the study of energy transfers in incompressible magnetohydrodynamic turbulence

Autor: Olga Alexandrova, Lorenzo Matteini, Denis Kuzzay

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2019, 99 (5), ⟨10.1103/PhysRevE.99.053202⟩

We present a local approach to the study of scale-to-scale energy transfers in magnetohydrodynamic (MHD) turbulence. This approach is based on performing local averages of the physical fields, which amounts to filtering scales smaller than some param

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d34ae50d471b9af0a3dbd3e32bfe3d12
https://pubmed.ncbi.nlm.nih.gov/31212494

Experimental test of the crossover between the inertial and the dissipative range in a turbulent swirling flow

Autor: Nicolás Wschebor, F. Daviaud, Denis Kuzzay, Paul Debue, Léonie Canet, Ewe-Wei Saw, Vincent Rossetto, Bérengère Dubrulle

Publikováno v: Physical Review Fluids
Physical Review Fluids, 2018, 3 (2), pp.024602. ⟨10.1103/PhysRevFluids.3.024602⟩
Physical Review Fluids, American Physical Society, 2018, 3 (2), pp.024602. ⟨10.1103/PhysRevFluids.3.024602⟩

International audience; The kinetic energy spectrum of high-Reynolds turbulent swirling flows is experimentally studied. This spectrum, obtained from direct measurements in space, exhibits nearly two decades of Kol-mogorov k −5/3 decay in the inert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ea229359e082df92fadb4e588a41d1
https://doi.org/10.1103/physrevfluids.3.024602

New method for detecting singularities in experimental incompressible flows

Autor: Denis Kuzzay, Bérengère Dubrulle, Fabio J. W. A. Martins, François Daviaud, Ewe-Wei Saw, Jean-Marc Foucaut, Davide Faranda

Publikováno v: Nonlinearity
Nonlinearity, IOP Publishing, 2017, 30 (6), pp.2381-2402. ⟨10.1088/1361-6544/aa6aaf⟩
Nonlinearity, 2017, 30 (6), pp.2381-2402. ⟨10.1088/1361-6544/aa6aaf⟩

International audience; We introduce two new singularity detection criteria based on the work of Duchon-Robert (DR) [J. Duchon and R. Robert, Nonlinearity, 13, 249 (2000)], and Eyink [G.L. Eyink, Phys. Rev. E, 74 (2006)] which allow for the local det

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53550150f88687a8f513600a30bc0dc1
https://hal.archives-ouvertes.fr/hal-02886490/file/kuzzay_et_al.pdf

Experimental characterization of extreme events of inertial dissipation in a turbulent swirling flow

Autor: Denis Kuzzay, Ewe-Wei Saw, Davide Faranda, V. Padilla, A. Guittonneau, F. Daviaud, Bérengère Dubrulle, C. Wiertel-Gasquet

Publikováno v: Nature Communications
Nature Communications, Nature Publishing Group, 2016, 7, pp.12466. ⟨10.1038/ncomms12466⟩
Nature Communications, 2016, 7, pp.12466. ⟨10.1038/ncomms12466⟩
Nature Communications, Vol 7, Iss 1, Pp 1-8 (2016)

The three-dimensional incompressible Navier–Stokes equations, which describe the motion of many fluids, are the cornerstones of many physical and engineering sciences. However, it is still unclear whether they are mathematically well posed, that is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5298a17e6aa6073ccc822005e6756a29
https://hal-cea.archives-ouvertes.fr/cea-01490836