Acceleration scaling and stochastic dynamics of a fluid particle in turbulence

Autor: Rémi Zamansky

Publikováno v: Physical Review Fluids. 7

It is well known that the fluid-particle acceleration is intimately related to the dissipation rate of turbulence, in line with the Kolmogorov assumptions. On the other hand, various experimental and numerical works have reported as well its dependen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c81e35d1775c5a3848e82c6e2de570af
https://doi.org/10.1103/physrevfluids.7.084608

Numerical simulations of the agitation generated by coarse-grained bubbles moving at large Reynolds number

Autor: Frédéric Risso, Rémi Zamansky, Jean-François Haquet, F. Le Roy De Bonneville, Anne Boulin

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2021, 926, ⟨10.1017/jfm.2021.670⟩

International audience; We present a numerical method for simulating the flow induced by bubbles rising at large Reynolds number. This method is useful to simulate configurations of large dimensions involving a great number of bubbles. The action tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7fd4a0254d8a14cbc891683ffe417ec3
https://hal.archives-ouvertes.fr/hal-03366114/file/big_bubbles.pdf

Revisiting the framework for intermittency in Lagrangian stochastic models for turbulent flows: a way to an original and versatile numerical approach

Autor: Marc Massot, Aymeric Vié, Rémi Zamansky, Roxane Letournel, Ludovic Goudenège

Publikováno v: Physical Review E : Statistical, Nonlinear, and Soft Matter Physics
Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, In press, 104, pp.015104. ⟨10.1103/PhysRevE.104.015104⟩

The characterization of intermittency in turbulence has its roots in the refined similarity hypotheses of Kolmogorov, and if no proper definition is to be found in the literature, statistical properties of intermittency were studied and models were d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75e0468788221c73998766f08e6d3eda
http://arxiv.org/abs/2103.15562

Controlled inline fluid separation based on smart process tomography sensors

Autor: Dominique Legendre, Eckhart Schleicher, Uwe Hampel, Muhammad Awais Sattar, Rémi Zamansky, Eric Climent, Laurent Babout, Robert Banasiak, Hanane Atmani, L.M. Portela, Annaïg Pedrono, Benjamin Sahovic, Matheus Martinez Garcia

Publikováno v: Chemie Ingenieur Technik
Chemie Ingenieur Technik, Wiley-VCH Verlag, 2020, 92 (5), pp.554-563. ⟨10.1002/cite.201900172⟩
Chemie Ingenieur Technik 92(2020)5, 554-563
Chemie-Ingenieur-Technik: Verfahrenstechnik, Technische Chemie, Apparatewaren, Biotechnologie, 92(5)

Today’s mechanical fluid separators in industry are mostly operated without any control to maintain efficient separation for varying inlet conditions. Controlling inline fluid separators, on the other hand, is challenging for two reasons: the proce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5789a095fe2f9765558d3adac4b11df6
https://hal.archives-ouvertes.fr/hal-03181083/file/Sahovic_27536.pdf

Power fluctuations in turbulence

Autor: Rémi Zamansky, Wouter J. T. Bos

Publikováno v: Physical Review Letters
Physical Review Letters, American Physical Society, 2019, 122 (12), pp.1-6. ⟨10.1103/physrevlett.122.124504⟩

International audience; To generate or maintain a turbulent flow, one needs to introduce kinetic energy. This energy injection necessarily fluctuates and these power fluctuations act on all turbulent excited length scales. If the power is injected us

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d42c5f158ad5bf9e921ce06da8cb5ed2
https://hal.archives-ouvertes.fr/hal-02134629/document