The spatio-temporal spectrum of turbulent flows
Abstract.: Identification and extraction of vortical structures and of waves in a disorganised flow is a mayor challenge in the study of turbulence. We present a study of the spatio-temporal behavior of turbulent flows in the presence of different restitutive forces. We show how to compute and analy...
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paper:paper_12928941_v38_n12_p1_ClarkdiLeoni2023-06-08T16:10:15Z The spatio-temporal spectrum of turbulent flows Mininni, Pablo Daniel Topical Issue: Multi-scale phenomena in complex flows and flowing matter Absorption spectroscopy Turbulent flow Water waves Complex flow Gravity capillary waves Homogeneous and isotropic turbulence Laboratory experiments Spatio-temporal spectrum Spatiotemporal behaviors Stratified turbulence Vortical structures Turbulence Abstract.: Identification and extraction of vortical structures and of waves in a disorganised flow is a mayor challenge in the study of turbulence. We present a study of the spatio-temporal behavior of turbulent flows in the presence of different restitutive forces. We show how to compute and analyse the spatio-temporal spectrum from data stemming from numerical simulations and from laboratory experiments. Four cases are considered: homogeneous and isotropic turbulence, rotating turbulence, stratified turbulence, and water wave turbulence. For homogeneous and isotropic turbulence, the spectrum allows identification of sweeping by the large-scale flow. For rotating and for stratified turbulence, the spectrum allows identification of the waves, precise quantification of the energy in the waves and in the turbulent eddies, and identification of physical mechanisms such as Doppler shift and wave absorption in critical layers. Finally, in water wave turbulence the spectrum shows a transition from gravity-capillary waves to bound waves as the amplitude of the forcing is increased. Graphical abstract: [Figure not available: see fulltext.] © 2015, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. Fil:Mininni, P.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_12928941_v38_n12_p1_ClarkdiLeoni http://hdl.handle.net/20.500.12110/paper_12928941_v38_n12_p1_ClarkdiLeoni |
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Universidad de Buenos Aires |
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I-28 |
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R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Topical Issue: Multi-scale phenomena in complex flows and flowing matter Absorption spectroscopy Turbulent flow Water waves Complex flow Gravity capillary waves Homogeneous and isotropic turbulence Laboratory experiments Spatio-temporal spectrum Spatiotemporal behaviors Stratified turbulence Vortical structures Turbulence |
| spellingShingle |
Topical Issue: Multi-scale phenomena in complex flows and flowing matter Absorption spectroscopy Turbulent flow Water waves Complex flow Gravity capillary waves Homogeneous and isotropic turbulence Laboratory experiments Spatio-temporal spectrum Spatiotemporal behaviors Stratified turbulence Vortical structures Turbulence Mininni, Pablo Daniel The spatio-temporal spectrum of turbulent flows |
| topic_facet |
Topical Issue: Multi-scale phenomena in complex flows and flowing matter Absorption spectroscopy Turbulent flow Water waves Complex flow Gravity capillary waves Homogeneous and isotropic turbulence Laboratory experiments Spatio-temporal spectrum Spatiotemporal behaviors Stratified turbulence Vortical structures Turbulence |
| description |
Abstract.: Identification and extraction of vortical structures and of waves in a disorganised flow is a mayor challenge in the study of turbulence. We present a study of the spatio-temporal behavior of turbulent flows in the presence of different restitutive forces. We show how to compute and analyse the spatio-temporal spectrum from data stemming from numerical simulations and from laboratory experiments. Four cases are considered: homogeneous and isotropic turbulence, rotating turbulence, stratified turbulence, and water wave turbulence. For homogeneous and isotropic turbulence, the spectrum allows identification of sweeping by the large-scale flow. For rotating and for stratified turbulence, the spectrum allows identification of the waves, precise quantification of the energy in the waves and in the turbulent eddies, and identification of physical mechanisms such as Doppler shift and wave absorption in critical layers. Finally, in water wave turbulence the spectrum shows a transition from gravity-capillary waves to bound waves as the amplitude of the forcing is increased. Graphical abstract: [Figure not available: see fulltext.] © 2015, EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. |
| author |
Mininni, Pablo Daniel |
| author_facet |
Mininni, Pablo Daniel |
| author_sort |
Mininni, Pablo Daniel |
| title |
The spatio-temporal spectrum of turbulent flows |
| title_short |
The spatio-temporal spectrum of turbulent flows |
| title_full |
The spatio-temporal spectrum of turbulent flows |
| title_fullStr |
The spatio-temporal spectrum of turbulent flows |
| title_full_unstemmed |
The spatio-temporal spectrum of turbulent flows |
| title_sort |
spatio-temporal spectrum of turbulent flows |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_12928941_v38_n12_p1_ClarkdiLeoni http://hdl.handle.net/20.500.12110/paper_12928941_v38_n12_p1_ClarkdiLeoni |
| work_keys_str_mv |
AT mininnipablodaniel thespatiotemporalspectrumofturbulentflows AT mininnipablodaniel spatiotemporalspectrumofturbulentflows |
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1768545062508036096 |