Výsledky vyhledávání

Autor: Damien Biau

Direct numerical simulations of temporally evolving boundary layer flows are considered with solutions restricted to self-similar profiles. A new set of modified Navier–Stokes equations is solved with periodic boundary conditions in the streamwise

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fb0c4b26fb0886a3b0628d84d12d52ff
https://hdl.handle.net/10985/23423

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Flow in a weakly curved square duct: Assessment and extension of Dean's model

Autor: Xavier Gloerfelt, Leonardo Rigo, Damien Biau

Publikováno v: Physical Review Fluids. 6

The simplified model by W. R. Dean, based on a low-curvature assumption, provided an early understanding of the laminar flow in curved ducts. However, most of the following studies relied on computer simulations of the complete curvilinear Navier-Sto

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::55afefcccabc7d7054ff0f7c7c4ccfa6
https://doi.org/10.1103/physrevfluids.6.024101

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The aeroacoustic field produced by a turbulent puff in a duct of square cross section

Autor: Leonardo Rigo, Damien Biau, Xavier Gloerfelt

Publikováno v: AIAA AVIATION 2020 FORUM.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09236723d27061675bb87b7e016482fa
https://doi.org/10.2514/6.2020-2531

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Restricted nonlinear model for high- and low-drag events in plane channel flow

Autor: Frédéric Alizard, Damien Biau

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2019, 864, pp.221-243. ⟨10.1017/jfm.2019.14⟩

A restricted nonlinear (RNL) model, obtained by partitioning the state variables into streamwise-averaged quantities and superimposed perturbations, is used in order to track the exact coherent state in plane channel flow investigated by Toh & Itano

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d19022a3f3ad358281ee677c49c27154
https://hdl.handle.net/10985/18049

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Closed-loop control of a free shear flow - a framework using the parabolized stability equations

Autor: Kenzo Sasaki, Damien Biau, Gilles Tissot, Peter Jordan, Flavio J. Silvestre, André V. G. Cavalieri

Publikováno v: Theoretical and Computational Fluid Dynamics
Theoretical and Computational Fluid Dynamics, Springer Verlag, 2018, 32 (6), pp.765-788. ⟨10.1007/s00162-018-0477-x⟩
Theoretical and Computational Fluid Dynamics, 2018, 32 (6), pp.765-788. ⟨10.1007/s00162-018-0477-x⟩

International audience; In this study the parabolized stability equations (PSE) are used to build reduced-order-models (ROMs) given in terms of frequency and time-domain transfer functions (TFs) for application in closed-loop control. The control law

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6d54c56ba8d25e527086c637d0e84a89
https://hal.inria.fr/hal-01946835/file/Sasaki-Tissot-Cavalieri-Silvestre-Jordan-Biau_TCFD_2018_author.pdf

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A framework for closed-loop flow control using the parabolized stability equations

Autor: Kenzo Sasaki, André V. G. Cavalieri, Gilles Tissot, Flavio J. Silvestre, Damien Biau, Peter Jordan

Publikováno v: 23rd AIAA/CEAS Aeroacoustics Conference
23rd AIAA/CEAS Aeroacoustics Conference, 2017, Denver, United States. pp.1-11, ⟨10.2514/6.2017-3003⟩
Scopus-Elsevier

International audience; We develop a reduced-order-model framework using the parabolized stability equationsand identification techniques for the closed-loop control of unsteady fluctuations alongfluidic systems. These models had been successfully ap

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a4cf0bbdab8b16c01c2b4b510280dd1b
https://hal.science/hal-02443472/file/DYNFLUID_Aeroacoustics_Conference_2017_BIAU.pdf

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A reference solution of the flow over a circular cylinder at Re=40

Autor: Damien Biau, Rémi Gautier, Eric Lamballais

Publikováno v: Computers and Fluids
Computers and Fluids, Elsevier, 2013, 75, pp.103-111. ⟨10.1016/j.compfluid.2012.12.017⟩

International audience; The classical problem of the flow over a circular cylinder at Reynolds number 40 is considered using an accurate pseudo-spectral code. A new set of boundary conditions is proposed to improve the representation of the infinite

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47361013f1456cdcaebf6740eb2c66b1
https://doi.org/10.1016/j.compfluid.2012.12.017

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Transient growth of perturbations in Stokes oscillatory flows

Autor: Damien Biau

Publikováno v: Journal of Fluid Mechanics
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2016, 794, pp.10. ⟨10.1017/jfm.2016.210⟩

International audience; Oscillatory Stokes flows, with zero mean, are subjected to subcritical transition to turbulence. The maximal energy growth of perturbations is computed in the subcritical regime through an optimisation method. The results show

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ebb2db289b6deec5a489cde80033969
https://hal.archives-ouvertes.fr/hal-01377582/file/Dynfluid-JFM-BIAU-2016.pdf

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Closed-loop control of wavepackets in a free shear-flow

Autor: Kenzo Sasaki, Gilles Tissot, Damien Biau, Flavio J. Silvestre, Peter Jordan, André V. G. Cavalieri

Publikováno v: 22nd AIAA/CEAS Aeroacoustics Conference
22nd AIAA/CEAS Aeroacoustics Conference, 2016, Lyon, France. pp.1-13, ⟨10.2514/6.2016-2758⟩
Scopus-Elsevier

This study aims at the attenuation of the unsteady fluctuations along a two-dimensional mixing layer which may be considered as a prototypical problem for the evaluation of es- timation and control techniques, and also a canonical problem, when compr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d5c41a91811e77dec73669b4c24e9c94
https://hal.science/hal-02444113

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Autor: Damien Biau

Publikováno v: Comptes Rendus Mécanique. 339:245-249

This Note presents an analytical solution of two-dimensional axisymmetric wakes valid in the development region, before the ultimate equilibrium state. Based on the boundary layer equations in polar coordinates, assuming a small velocity defect, the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e99cc15a0c11804ace4d25750b0215dc
https://doi.org/10.1016/j.crme.2011.01.003

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