Výsledky vyhledávání - "Philippe Maïssa"

Negative energy waves in a shear flow with a linear profile

Autor: Yury Stepanyants, Germain Rousseaux, Philippe Maïssa

Publikováno v: European Journal of Mechanics-B/Fluids
European Journal of Mechanics-B/Fluids, Elsevier, 2016, 56, pp.192-199. ⟨10.1016/j.euromechflu.2016.01.003⟩

We present a derivation of the time averaged potential and kinetic energies for small-amplitude surface waves on a shear flow with constant vorticity. The effect of surface tension is also taken into consideration. It is demonstrated that the virial

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1ac02b8378c514829111e89e2f4e3bd
https://doi.org/10.1016/j.euromechflu.2016.01.003

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Pattern formation in bubbles emerging periodically from a liquid free surface

Autor: Harunori Yoshikawa, Germain Rousseaux, Stéphane Douady, Christian Mathis, Philippe Maïssa

Publikováno v: European Physical Journal E: Soft matter and biological physics
European Physical Journal E: Soft matter and biological physics, EDP Sciences: EPJ, 2010, 33, pp.11-18. ⟨10.1140/epje/i2010-10645-8⟩

International audience; Patterns formed by centimeter scale bubbles on the free surface of a viscous liquid are investigated in a cylindrical container. These bubbles emerge periodically at the surface and interact with each other in the central zone

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4f3a824b7226a99cdc1c1d3621f93ec5
https://doi.org/10.1140/epje/i2010-10645-8

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Wave blocking phenomenon of surface waves on a shear flow with aconstant vorticity

Autor: Philippe Maïssa, Yury Stepanyants, Germain Rousseaux

Publikováno v: Physics of Fluids
Physics of Fluids, American Institute of Physics, 2016, 28, pp.032102. ⟨10.1063/1.4942116⟩

Propagation of gravity-capillary surface waves on a background shear flow with a constant vorticity is studied and compared with the case when the background flow is uniform in depth. Under the assumption that the background flow gradually varies in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8673b347655ea5942df78fc64c35aeef
https://hal.archives-ouvertes.fr/hal-01284705

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Kinetic study of char combustion in a fluidized bed

Autor: Somchuer Brunello, Philippe Maïssa, Isabelle Flour, Bernard Bruyet

Publikováno v: Fuel. 75:536-544

Experiments were carried out with eight different chars in a batch fluidized bed reactor. The combustion rate was determined by measuring the CO and CO2 concentrations in the flue gas. Four models were tested, but only two well described the combusti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84731f368d52a19729670dca5319c605
https://doi.org/10.1016/0016-2361(95)00305-3

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Some Aspects of Dispersive Horizons: Lessons from Surface Waves

Autor: Gil Jannes, Philippe Maïssa, Germain Rousseaux, Jennifer Chaline

Publikováno v: Analogue Gravity Phenomenology
Analogue Gravity Phenomenology, Springer, pp.145-165, 2013, Lecture Notes in Physics 870, ⟨10.1007/978-3-319-00266-8_7⟩
Lecture Notes in Physics ISBN: 9783319002651

Hydrodynamic surface waves propagating on a moving background flow experience an effective curved space-time. We discuss experiments with gravity waves and capillary-gravity waves in which we study hydrodynamic black/white-hole horizons and the possi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11e19dbf583c60b9cf759be31b4819dc
https://hal.archives-ouvertes.fr/hal-00911518

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Spiral pattern formation in a simple two-phase flow system

Autor: Harunori Yoshikawa, Christian Mathis, Philippe Maïssa, Germain Rousseaux

Publikováno v: Chaos, Complexity and Transport
Chaos, Complexity and Transport CCT11
Chaos, Complexity and Transport CCT11, May 2011, France. pp.113
Chaos, Complexity And Transport ISBN: 9789814405638

International audience

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82cccc65e76cf179bb1d7afd833f0432
https://hal.univ-cotedazur.fr/hal-00910069

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Hawking radiation and the boomerang behaviour of massive modes near a horizon

Autor: Gil Jannes, Germain Rousseaux, Philippe Maïssa, Thomas G. Philbin

Publikováno v: Physical Review D
Physical Review D, American Physical Society, 2011, 83, pp.104028. ⟨10.1103/PhysRevD.83.104028⟩

We discuss the behaviour of massive modes near a horizon based on a study of the dispersion relation and wave packet simulations of the Klein-Gordon equation. We point out an apparent paradox between two (in principle equivalent) pictures of black ho

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25c84d1dd52d171451fc4c0d54ecc747

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Experimental demonstration of the supersonic-subsonic bifurcation in the circular jump: a hydrodynamic white hole

Autor: Gilles Jannes, Germain Rousseaux, Christian Mathis, Philippe Maïssa, Robert Piquet

Publikováno v: Physical Review E : Statistical, Nonlinear, and Soft Matter Physics
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2011, 83, pp.056312

We provide an experimental demonstration that the circular hydraulic jump represents a hydrodynamic white hole or gravitational fountain (the time-reverse of a black hole) by measuring the angle of the Mach cone created by an object in the "supersoni

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::78b5123303c00e257ccbc65c97f42806
https://pubmed.ncbi.nlm.nih.gov/21728652

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Horizon effects with surface waves on moving water

Autor: Christian Mathis, Philippe Maïssa, Germain Rousseaux, Thomas G. Philbin, Ulf Leonhardt, Pierre Coullet

Surface waves on a stationary flow of water are considered, in a linear model that includes the surface tension of the fluid. The resulting gravity-capillary waves experience a rich array of horizon effects when propagating against the flow. In some

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c5bc85d25f3793e5ddbc36d85c126a3
http://arxiv.org/abs/1004.5546

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Destabilization of a viscous film flowing down in the form of a vertical cylindrical curtain

Autor: Manoranjan Mishra, Christian Mathis, Philippe Maïssa, Christophe Pirat

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2006, 97, pp.184501. ⟨10.1103/PhysRevLett.97.184501⟩
Physical review letters, 97. American Physical Society

In this letter, we study experimentally a viscous liquid curtain in an annular geometry. Gap and median radius can be varied in such a way that the base of the initially stationary cylindrical curtain is led to oscillate by decreasing the flow rate.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d8cf19285a29c7af9d814a69d03193fe
https://pubmed.ncbi.nlm.nih.gov/17155545

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