lionel agostini

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Publications

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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-04357505 v1
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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-04379590 v1
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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-03852043 v1
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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-03303242 v1

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-03279615 v1

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-03279493 v1

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-03279501 v1

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-03279497 v1

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-03279603 v1

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-03279509 v1

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-03279518 v1

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-03279636 v1

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-03279519 v1
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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-03279534 v1

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-03279543 v1

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-03279617 v1

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-03279606 v1
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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-01455109 v1

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-03279597 v1

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-03279609 v1

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-03279630 v1
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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-01460677 v1

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-03279634 v1
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Data-driven modeling of near-wall turbulence using β-variational autoencoder, transformers, and adversarial loss

Niccolò Tonioni , Mohammad Umair , Lionel Agostini , Franck Kerhervé , Laurent Cordier et 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-05357972 v1

β-Variational autoencoder and transformer-based data-driven modeling of near-wall turbulence

Niccolò Tonioni , Mohammad Umair , Lionel Agostini , Franck Kerhervé , Laurent Cordier et 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-05358991 v1

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-05358997 v1

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-05360755 v1
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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-05357823 v1

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-05359010 v1

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-04680968 v1

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-04961027 v1

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-04680961 v1
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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-03866126 v1
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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-03866112 v1
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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-03378287 v1