Zobrazeno 1 - 10
of 60
pro vyhledávání: '"Yohann DUGUET"'
Publikováno v:
Physical Review Research, Vol 6, Iss 3, p 033066 (2024)
The effect of an imposed magnetic field on the flow of an electrically conducting fluid in a channel geometry is investigated numerically using high-performance temporal simulations. For the strongest spanwise magnetic fields considered, the turbulen
Externí odkaz:
https://doaj.org/article/f17f348c35274fa2a8fba42b7939b4e9
Autor:
Yohann Duguet
Publikováno v:
Entropy, Vol 23, Iss 3, p 280 (2021)
The study of the transition from a laminar to a turbulent flow is as old as the study of turbulence itself [...]
Externí odkaz:
https://doaj.org/article/698ee54f79a143fb92fd3a0bd2fe7fdf
Publikováno v:
Entropy, Vol 22, Iss 9, p 1001 (2020)
The transitional regime of plane channel flow is investigated above the transitional point below which turbulence is not sustained, using direct numerical simulation in large domains. Statistics of laminar-turbulent spatio-temporal intermittency are
Externí odkaz:
https://doaj.org/article/f459d88c0cfa4f99bdc9d2233dc3b95c
Publikováno v:
Entropy, Vol 22, Iss 9, p 988 (2020)
The onset of turbulence in subcritical shear flows is one of the most puzzling manifestations of critical phenomena in fluid dynamics. The present study focuses on the Couette flow inside an infinitely long annular geometry where the inner rod moves
Externí odkaz:
https://doaj.org/article/fca1941dc2864db78c5e1c6486fe42c6
Publikováno v:
Physical Review Research, Vol 2, Iss 3, p 033258 (2020)
Dissipative dynamical systems characterized by two basins of attraction are found in many physical systems, notably in hydrodynamics where laminar and turbulent regimes can coexist. The state space of such systems is structured around a dividing mani
Externí odkaz:
https://doaj.org/article/4c1625bdae794b869852b5940ccb05c7
Publikováno v:
Journal of Fluid Science and Technology, Vol 13, Iss 3, Pp JFST0019-JFST0019 (2018)
In most subcritical planar shear flows, the transitional regime features oblique large-scale laminar-turbulent patterns. So far, such laminar-turbulent patterns have only been investigated in flows over perfectly smooth walls and little attention has
Externí odkaz:
https://doaj.org/article/6382f06622bd4b9486b6369ebfe49af3
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, 2022, 935, pp.A2. ⟨10.1017/jfm.2021.980⟩
Journal of Fluid Mechanics, 2022, 935, pp.A2. ⟨10.1017/jfm.2021.980⟩
International audience; In an experimental context, the contamination of an air–liquid interface by ambient pollutants can strongly affect the dynamics and the stability of a given flow. In some configurations, the interfacial flow can even be bloc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72b0ced24f1cb448de729af226ae4647
https://doi.org/10.1017/jfm.2021.980
https://doi.org/10.1017/jfm.2021.980
Publikováno v:
Physical Review Fluids
Physical Review Fluids, American Physical Society, 2020, 5 (10), ⟨10.1103/PhysRevFluids.5.103902⟩
Physical Review Fluids, American Physical Society, 2020, 5 (10), ⟨10.1103/PhysRevFluids.5.103902⟩
The proliferation of turbulence in subcritical wall-bounded shear flows involves spatially localised coherent structures. Turbulent spots correspond to finite-time nonlinear responses to pointwise disturbances and are regarded as seeds of turbulence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a294182c873595ff19b7b546c4dc0a8c
https://hal.archives-ouvertes.fr/hal-03032106/file/KDC_PRF2020.pdf
https://hal.archives-ouvertes.fr/hal-03032106/file/KDC_PRF2020.pdf
Publikováno v:
Physical Review Research
Physical Review Research, American Physical Society, 2020, 2 (3), ⟨10.1103/PhysRevResearch.2.033258⟩
Physical Review Research, American Physical Society, 2020, 2 (3), ⟨10.1103/PhysRevResearch.2.033258⟩
International audience; Dissipative dynamical systems characterised by two basins of attraction are found in many physical systems, notably in hydrodynamics where laminar and turbulent regimes can coexist. The state space of such systems is structure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcf1b88d70e54f06f07c5f4acbaf3bdb
https://hal.archives-ouvertes.fr/hal-03032049
https://hal.archives-ouvertes.fr/hal-03032049
Publikováno v:
Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2020, 897, ⟨10.1017/jfm.2020.322⟩
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2020, 897, ⟨10.1017/jfm.2020.322⟩
International audience; With decreasing Reynolds number, Re, turbulence in channel flow becomes spatiotemporally intermittent and self-organises into solitary stripes oblique to the mean flow direction. We report here the existence of localised nonli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45d411910be1f6134d98d234ee90fa4c
https://hal.archives-ouvertes.fr/hal-03032066
https://hal.archives-ouvertes.fr/hal-03032066