lionel agostini

Publications

Article dans une revue (23)

Preferential enhancement of convective heat transfer over drag via near-wall turbulence manipulation using spanwise wall oscillations Lou Guérin,Cédric Flageul,Laurent Cordier,Stéphane Grieu,Lionel Agostini International Journal of Heat and Fluid Flow, 2024, 110, pp.109564. ⟨10.1016/j.ijheatfluidflow.2024.109564⟩ Article dans une revue hal-04357505v1
Catching up with missing particles Séverine Atis,Lionel Agostini Nature Machine Intelligence, 2023, 6, pp.13-14. ⟨10.1038/s42256-023-00770-x⟩ Article dans une revue hal-04379590v1
Auto-encoder-assisted analysis of amplitude and wavelength modulation of near-wall turbulence byouter large-scale structures in channel flow at friction Reynolds number of 5200 Lionel Agostini,Michael Leschziner Physics of Fluids, 2022, ⟨10.1063/5.0123119⟩ Article dans une revue hal-03852043v1
Statistical analysis of outer large-scale/inner-layer interactions in channel flow subjected to oscillatory drag-reducing wall motion using a multiple-variable joint PDF methodology Lionel Agostini,Michael A Leschziner Journal of Fluid Mechanics, 2021, 923, ⟨10.1017/jfm.2021.585⟩ Article dans une revue hal-03303242v1
Dynamics of separation bubble dilation and collapse in shock wave/turbulent boundary layer interactions M. Waindim,L. Agostini,L. Larchêveque,M. Adler,D. Gaitonde Shock Waves, 2020, 30 (1), pp.63-75. ⟨10.1007/s00193-019-00918-y⟩ Article dans une revue hal-03279615v1
Exploration and prediction of fluid dynamical systems using auto-encoder technology Lionel Agostini Physics of Fluids, 2020, 32 (6), pp.067103. ⟨10.1063/5.0012906⟩ Article dans une revue hal-03279493v1
The connection between the spectrum of turbulent scales and the skin-friction statistics in channel flow at Lionel Agostini,Michael Leschziner Journal of Fluid Mechanics, 2019, 871, pp.22-51. ⟨10.1017/jfm.2019.297⟩ Article dans une revue hal-03279501v1
On the departure of near-wall turbulence from the quasi-steady state Lionel Agostini,Michael Leschziner Journal of Fluid Mechanics, 2019, 871, ⟨10.1017/jfm.2019.395⟩ Article dans une revue hal-03279497v1
The Impact of Footprints of Large-Scale Outer Structures on the Near-Wall Layer in the Presence of Drag-Reducing Spanwise Wall Motion Lionel Agostini,Michael Leschziner Flow, Turbulence and Combustion, 2018, 100 (4), pp.1037-1061. ⟨10.1007/s10494-018-9917-3⟩ Article dans une revue hal-03279603v1
Multi-scale interactions in a compressible boundary layer Lionel Agostini,Michael Leschziner,Jonathan Poggie,Nicholas Bisek,Datta Gaitonde Journal of Turbulence, 2017, 18 (8), pp.760-780. ⟨10.1080/14685248.2017.1328108⟩ Article dans une revue hal-03279509v1
Spectral analysis of near-wall turbulence in channel flow at Re τ = 4200 with emphasis on the attached-eddy hypothesis Lionel Agostini,Michael Leschziner Physical Review Fluids, 2017, 2 (1), ⟨10.1103/PhysRevFluids.2.014603⟩ Article dans une revue hal-03279518v1
Directivity and intermittency in the nearfield of a Mach 1.3 jet S Unnikrishnan,Datta Gaitonde,Lionel Agostini International Journal of Aeroacoustics, 2017, 16 (3), pp.135-164. ⟨10.1177/1475472X17709926⟩ Article dans une revue hal-03279636v1
On the validity of the quasi-steady-turbulence hypothesis in representing the effects of large scales on small scales in boundary layers Lionel Agostini,Michael Leschziner Physics of Fluids, 2016, 28 (4), pp.045102. ⟨10.1063/1.4944735⟩ Article dans une revue hal-03279519v1
On the validity of the quasi-steady-turbulence hypothesis in representing the effects of large scales on small scales in boundary layers Lionel Agostini,Michael Leschziner Physics of Fluids, 2016, 28 (4), pp.045102. ⟨10.1063/1.4944735⟩ Article dans une revue hal-03279534v1
Predicting the response of small-scale near-wall turbulence to large-scale outer motions Lionel Agostini,Michael Leschziner Physics of Fluids, 2016, 28 (1), pp.015107. ⟨10.1063/1.4939712⟩ Article dans une revue hal-03279543v1
Mechanism of shock unsteadiness in separated shock/boundary-layer interactions L. Agostini,L. Larchevêque,P. Dupont Physics of Fluids, 2015, 27 (12), pp.126103. ⟨10.1063/1.4937350⟩ Article dans une revue hal-03279617v1
The turbulence vorticity as a window to the physics of friction-drag reduction by oscillatory wall motion L. Agostini,E. Touber,M.A. Leschziner International Journal of Heat and Fluid Flow, 2015, 51, pp.3-15. ⟨10.1016/j.ijheatfluidflow.2014.08.002⟩ Article dans une revue istex hal-03279606v1
Mechanism of shock unsteadiness in separated shock/boundary-layer interactions Lionel Agostini,Lionel Larchevêque,Pierre Dupont Physics of Fluids, 2015, 27, pp.126103 - 126103. ⟨10.1063/1.4937350⟩ Article dans une revue hal-01455109v1
On the influence of outer large-scale structures on near-wall turbulence in channel flow L. Agostini,M. Leschziner Physics of Fluids, 2014, 26 (7), pp.075107. ⟨10.1063/1.4890745⟩ Article dans une revue hal-03279597v1
Spanwise oscillatory wall motion in channel flow: drag-reduction mechanisms inferred from DNS-predicted phase-wise property variations at L. Agostini,E. Touber,M. Leschziner Journal of Fluid Mechanics, 2014, 743, pp.606-635. ⟨10.1017/jfm.2014.40⟩ Article dans une revue hal-03279609v1
Numerical study of three-dimensional modulations in a shock-induced separation L. Agostini,L. Larchevêque,E. Garnier,E. de Martel Progress in Flight Physics, 2012, pp.157-168. ⟨10.1051/eucass/201203157⟩ Article dans une revue hal-03279630v1
Zones of Influence and Shock Motion in a Shock/Boundary-Layer Interaction Lionel Agostini,Lionel Larchevêque,Pierre Dupont,Jean-François Debiève,Jean-Paul Dussauge AIAA Journal, 2012, 50 (6), pp.1377-1387. ⟨10.2514/1.J051516⟩ Article dans une revue hal-01460677v1
Numerical study of shock-turbulent boundary layer interactions with incipient and complete separation Lionel Agostini,Pierre Dupont,Lionel Larcheveque,Jean Paul Dussauge International Journal of Engineering Systems Modelling and Simulation, 2011, 3 (1/2), pp.46. ⟨10.1504/IJESMS.2011.038749⟩ Article dans une revue hal-03279634v1

Communication dans un congrès (14)

FLOW FIELD RECONSTRUCTION APPLIED ON FLOW PHENOMENA DETECTION IN A SPARSE SENSED TURBOPUMP MANIFOLD Sarah Kramer,Louis Souverein,Lionel Agostini,Günther Waxenegger-Wilfing,Stefan Schlechtriem EUCASS, Jun 2025, Rome, Italy. ⟨10.13009/EUCASS2025-646⟩ Communication dans un congrès hal-05360716v1
Data-driven modeling of near-wall turbulence using β-variational autoencoder, transformers, and adversarial loss Niccolò Tonioni,Mohammad Umair,Lionel Agostini,Franck Kerhervé,Laurent Cordieret al. 11th International Symposium on Turbulence Heat and Mass Transfer (THMT’25), International Centre for Heat and Mass Transfert, Jul 2025, Tokyo, Japan Communication dans un congrès hal-05357972v1
Reduced-order modeling of experimental turbulent flows: from linear projection-based methods to autoencoders Niccolò Tonioni,Lionel Agostini,Franck Kerhervé,Laurent Cordier,Ricardo Vinuesa Digital Twins in Engineering & Artificial Intelligence and Computational Methods in Applied Science, IACMS, ECCOMAS, Feb 2025, Paris, France Communication dans un congrès hal-05359054v1
Flow field reconstruction of rocket engine turbine on sparse sensors Sarah Kramer,Louis Souverein,Lionel Agostini,Günther Waxenegger-Wilfing,Stefan Schlechtriem 1st International Symposium AI and Fluid Mechanics}{}{Chania, Greece, May 2025, Chania, Greece Communication dans un congrès hal-05360755v1
Deep learning of SPOD dynamics for reduced-order modeling of street canyon flow Nishant Kumar,Franck Kerhervé,Lionel Agostini,Laurent Cordier 1st International Symposium on AI and Fluid Mechanics (AIFLUIDs), May 2025, Chania (Crète), Greece Communication dans un congrès hal-05358997v1
β-Variational autoencoder and transformer-based data-driven modeling of near-wall turbulence Niccolò Tonioni,Mohammad Umair,Lionel Agostini,Franck Kerhervé,Laurent Cordieret al. Joint event Euromech Colloquium on Data-Driven Fluid Dynamics/2nd ERCOFTAC Workshop on Machine Learning for Fluid Dynamics, European Mechanics Society/ERCOFTAC, Apr 2025, London, United Kingdom Communication dans un congrès hal-05358991v1
VIVALDy: AI-Driven Low-Order Modeling of Vortex-Induced Vibrations via β-Variational Autoencoders, Transformers, and Adversarial Training Niccolò Tonioni,Lionel Agostini,Franck Kerhervé,Laurent Cordier,Ricardo Vinuesa 1st International Symposium on AI and Fluid Mechanics, May 2025, Chania, Greece Communication dans un congrès hal-05357823v1
Spectral proper orthogonal decomposition of street canyon flow dynamics and its application to time-domain reconstruction Nishant Kumar,Franck Kerhervé,Lionel Agostini,Laurent Cordier Joint event Euromech Colloquium on Data-Driven Fluid Dynamics/ 2nd ERCOFTAC Workshop on Machine Learning for Fluid Dynamics, Euromech/ERCOFTAC, Apr 2025, Londres, United Kingdom Communication dans un congrès hal-05359010v1
Breaking the Reynolds Analogy: Decoupling Turbulent Heat and Momentum Transport via Spanwise Wall Oscillation in Wall-Bounded Flow DLES14 Lou Guérin,Cédric Flageul,Laurent Cordier,Stéphane Grieu,Lionel Agostini DLES14, Apr 2024, Erlangen, Germany Communication dans un congrès hal-04680968v1
Autoencoder-Based Dimensionality Reduction of Turbulent Channel Flow Under Spanwise Wall Oscillations Lou Guérin,Thomas Fisk,Laurent Cordier,Cédric Flageul,Lionel Agostini 3rd IACM Digital Twins in Engineering Conference & 1st ECCOMAS Artificial Intelligence and Computational Methods in Applied Science (DTE & AICOMAS 2025), Feb 2025, Paris, France Communication dans un congrès hal-04961027v1
Breaking the Reynolds Analogy: Decoupling Turbulent Heat and Momentum Transport via Spanwise Wall Oscillation in Wall-Bounded Flow EUROMECH-631 Lou Guérin,Cédric Flageul,Laurent Cordier,Stéphane Grieu,Lionel Agostini EUROMECH-631, Mar 2024, Madrid (Spain), Spain Communication dans un congrès hal-04680961v1
ANALYSIS OF LARGE-SCALE/SMALL-SCALE INTERACTIONS IN TURBULENT CHANNEL FLOW AT RE τ = 5200 USING AUTO-ENCODER COMBINED WITH MULTIVARIATE-PDF Agostini Lionel,Michael Leschziner,Laurent Cordier 12th International Symposium on Turbulence and Shear Flow Phenomena (TSFP12), Jul 2022, Osaka, Japan Communication dans un congrès hal-03866126v1
INFERRING THE STRUCTURAL PROPERTIES OF EDDIES IN THE LOG LAYER FROM SPECTRAL STATISTICS Lionel Agostini,Michael Leschziner Tenth International Symposium on Turbulence and Shear Flow Phenomena, Jul 2017, Chicago, France. pp.653-658, ⟨10.1615/tsfp10.1110⟩ Communication dans un congrès hal-03866112v1
Three-dimensional separation in shock/boundary layer interaction Lionel Agostini,Lionel Larchevêque,Pierre Dupont,Jean-Paul Dussauge CFM 2009 - 19ème Congrès Français de Mécanique, Aug 2009, Marseille, France Communication dans un congrès hal-03378287v1

Poster de conférence (1)

VIVALDy: AI-Driven Low-Order Modeling of Vortex-Induced Vibrations Niccolò Tonioni,Lionel Agostini,Franck Kerhervé,Laurent Cordier,Ricardo Vinuesa Journée des doctorants, Jul 2025, Poitiers, France Poster de conférence hal-05359032v1

Pré-publication, Document de travail (2)

Policy-Based Optimization for Drag Reduction via Spanwise Wall Oscillations Lou Guérin,Laurent Cordier,Cédric Flageul,Stéphane Grieu,Lionel Agostini 2025 Pré-publication, Document de travail hal-04960976v1
VIVALDy: A Hybrid Generative Reduced-Order Model for Turbulent Flows, Applied to Vortex-Induced Vibrations Niccolò Tonioni,Lionel Agostini,Franck Kerhervé,Laurent Cordier,Ricardo Vinuesa 2025 Pré-publication, Document de travail hal-05357423v1