Dr. Thomas Duriez bio photo

Dr. Thomas Duriez

CONICET Researcher
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Thomas Duriez @ LFD

Overview

Background

I am a french researcher at Conicet. I deal with different aspects of fluids mechanics, with a bias toward flow control. I happen to be part of the pioneer team develloping the Machine Learning Control. If you bear with me a little I will tell you my history.

Undergraduate time

I graduated from ESPCI-Paristech, a rather high profile french engineering school dedicated to research in Paris, France. This is where I learned some tricks about science and specialized in physics. During my last year, I graduated from the Fluids Dynamics Master of the Paul Sabatier University in Toulouse with a traineeship in the IMFT.

PHD Thesis

I then had a very plesant time during my Ph.D. thesis at PMMH with Jose Eduardo Wesfreid and Jean-Luc Aider. Eduardo being Argentinian that is the exact moment I put a foot in the engrenage leading to my being in Buenos Aires. The subject of the thesis was about the control of separated flows using vortex generators (PDF, FR).

Many post-docs

Then I became a science mercenary, first at home at PMMH, playing with control of separated flows and cavity flows, a bit with SNCF. Then one year here at LFD, 6 month doing chaos control at LIMSI (Orsay, France) with Luc Pastur and François Lusseyran, one year in the wonderful TUCOROM team in the PPRIME institute (Poitiers, France) where we develloped the Machine Learning Control under the leadership of Bernd Noack.

CONICET Researcher

And I finally escaped from this decadent state that is France to establish myself in Argentina. Mostly to eat meat, empanadas and dance tango, that is true. A bit of details about past, present and future activities are following.

Activities

Instabilities & open-loop control

Boundary Layer Transition to turbulence (Active project)

With Guillermo Artana and Rick Lohman (PI).

During my time at PMMH we managed to witness experimental evidence of a self sustaining process (SSP) in the transitioning boundary layer. Luckily, we managed to get a PRL out of that. The big idea is that the longitudinal vorticity redistributes the vertical velocity gradients, which lead to high and low streamwise vorticity streaks which destabilize and leads to streamwise vorticity. This had been theorized by Waleffe.

Streamwise streaks and longitudinal vorticity under the action of vortex generators.

By achieving a thorough 3D PIV investigation of the flow, we managed to get the onset of the SSP process by looking at the energy in the streaks and the vortices.

Though I stopped working on it for some years, this is an active subject again.

Mixing Layer instabilities and perturbation (Active)

With Guillermo Artana and Federico Etcheto (PI).

We are investigating some unsual behaviour of a low Reynolds number shear layer strongly excited at subharmonic frequencies. This result in the formation of multiple vortex pairing. Publication is comming.

Active control of separated flows using micro jets (Closed)

With Jean-Luc Aider and Jose Eduardo Wesfreid (PMMH)

This project was part of the CARAVAJE PREDIT ADEME. This project included Renault, PSA, Plastic Ominium, Flowdit, the PMMH Laboratory of Paris, the IMB laboratory of Bordeaux and the IAT of Saint-Cyr. The aim of the project was to assess the possibilities of pulsed-jet control solutions on a Ahmed Body model. Most of the results can be found in the Ph.D. thesis of Pierric Joseph.

Active control of separated flow over a backward facing step using plasma actuators (Closed)

With Jean-Luc Aider, Jose Eduardo Wesfreid (PMMH) and Guillermo Artana (LFD).

This project was supported by the CNRS-CONICET International Associated Laboratory Fisica y Mecanica de Fluidos (LIA FMF).

Application of flow control to high-speed trains (Closed)

With Elisa Masson (SNCF), Jean-Luc Aider and Eduardo Wesfreid (PMMH)

I could speak about what i dealt about but I would have to kill you after that. You don’t miss so much though. During that time we made some nice vizualisations

Laser Induced Fluorescence vizualisation over a TGV in a water tank. Actually a 1:27 model of a TGV..

Closed-loop flow control

Visualisation Based control (Active)

With Pablo Roca (PI), Guillermo Artana, Ada Cammillieri and Lionel Mathelin.

We achieved a ARX system identification based on the simulation of tracers in a simulated flow around a cylinder. This system was used to build a predictive controler. The project goes on to apply this in a real world wind tunnel, using smoke visualisation.

Machine Learning Control (Active)

With the international Turbulence Control Team.

We designed and used a closed-loop control algorithm that has the possibility to learn an effective control from the experiment. Machine Learning Control (MLC) is model-free and can be in principle applied to any complex non-linear dynamical system. We demonstrated its worth on toy problems and experiements. (See publication list). I principally focus on upgrading the code by expanding functionalities and optimizing its efficiency.

Publications

Articles

  1. Duriez, T., Parezanovic̈ Vladimir, Cordier, L., Noack, B. R., Delville, J., Bonnet, J.-P., … Abel, M. (2014). Closed-Loop Turbulence Control Using Machine Learning. ArXiv Preprint ArXiv:1404.4589. [ PDF]
  2. Duriez, T., Aider, J.-L., Wesfreid, J. E., & Artana, G. (2014). Control of a Backward-Facing Step flow through vortex pairing and phase locking. ArXiv Preprint ArXiv:1405.4234. [ PDF]
  3. Gautier, N., Duriez, T., Aider, J.-L., Noack, B., Segond, M., & Abel, M. (2014). Closed-loop separation control using machine learning. ArXiv Preprint ArXiv:1405.0908. [ PDF]
  4. Parezanovic̈ Vladimir, Duriez, T., Cordier, L., Noack, B. R., Delville, J., Bonnet, J.-P., … Brunton, S. L. (2014). Closed-loop control of an experimental mixing layer using machine learning control. ArXiv Preprint ArXiv:1408.3259. [ PDF]
  5. Parezanovic, V., Laurentie, J.-C., Duriez, T., Fourment, C., Delville, J., Bonnet, J.-P., … Brunton, S. (2014). Mixing layer manipulation experiment - from periodic forcing to machine learning closed-loop control. Invited Contribution for the Journal Flow,Turbulence and Combustion (in Print). [ PDF]
  6. Roca, P., Cammilleri, A., Duriez, T., Mathelin, L., & Artana, G. (2014). Streakline-based closed-loop control of a bluff body flow. Physics of Fluids (1994-Present), 26(4), 047102. [ PDF]
  7. Duriez, T., Parezanovic, V., Noack, B. R., Cordier, L., Segond, M., & Abel, M. (2013). Attractor Control Using Machine Learning. ArXiv Preprint ArXiv:1311.5250.
  8. Roca, P., Duriez, T., Cammilleri, A., & Artana, G. (2013). Control a lazo cerrado de la estella de un cilindro. ANALES AFA, 23(3).
  9. Aider, J.-L., Duriez, T., & Wesfreid, J. E. (2009). From natural to forced counter-rotating streamwise vortices in boundary layers. Journal of Physics: Conference Series, 137(1), 012009. [ PDF]
  10. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2009). Self-sustaining process through streak generation in a flat-plate boundary layer. Physical Review Letters, 103(14), 144502. [ PDF]
  11. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2008). Non-linear modulation of a boundary layer induced by vortex generators. AIAA Paper. AIAA-2008-4076. Proceedings of the 4th AIAA Conference on Flow Control, Seattle, USA. [ PDF]
  12. Aider, J.-L., Duriez, T., Wesfreid, J. E., & others. (2007). Control of a separated flow over a smoothly contoured ramp using vortex generators. Flow Control and MEMS.

Conferences

  1. Duriez, T., Parezanovic, V., Laurentie, J.-C., Fourment, C., Delville, J., Bonnet, J.-P., … others. (2014). Closed-loop control of experimental shear flows using machine learning. In 7th AIAA Flow Control Conference, 2014-06-16..20, Atlanta, Georgia, USA (Vol. 3). AIAA. [ PDF]
  2. Noack, B. R., Duriez, T., Cordier, L., Segond, M., Abel, M., Brunton, S., … Bonnet, J.-P. (2013). Closed-loop turbulence control with machine learning methods. 66th Annual APS DFD Meeting, November 24 - November 26, 2013, Pittsburgh, Pennsylvania, USA.
  3. Aider, J.-L., Duriez, T., Wesfreid, J. E., & Artana, G. (2010). Forcing the shear layer of a backward-facing step flow using DBD plasma actuator. In APS 63rd Annual Meeting of the APS Division of Fluid Dynamics. November 21-23, 2010. Long Beach, CA (Vol. 55). APS.
  4. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2010). Experimental study of the flow over a backward-facing rounded ramp. In APS 63rd Annual Meeting of the APS Division of Fluid Dynamics. November 21-23, 2010. Long Beach, CA (Vol. 55). APS.
  5. Cambonie, T., Duriez, T., Wesfreid, J. E., & Aider, J.-L. (2009). Caractërisation de la croissance transitoire de perturbations 3D stationnaires introduites par des gënërateurs de vortex dans une couche limite. Application au contrôle d”un ëcoulement dëcollë. In AFM proceedings of 19ème Congrès Français de Mécanique, August 24–28, Marseille, France. [ PDF]
  6. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2009). Experimental evidence of the Self Sustaining Process in a flat plate boundary layer. In 62nd Annual Meeting of the APS Division of Fluid Dynamics, Volume 54, Number 19, November 22–24, 2009; Minneapolis, Minnesota (Vol. 54). APS.
  7. Duriez, T., Thiria, B., Cambonie, T., Wesfreid, J. E., & Aider, J. L. (2009). Interactions between vortex generators and a flat plate boundary layer. Application to the control of separated flows. In Advances in Turbulence XII (pp. 213–216). Springer.
  8. Duriez, T., Aider, J.-L., Masson, E., & Wesfreid, J. E. (2009). Qualitative investigation of the main flow features over a TGV. In EUROMECH COLLOQUIUM 509, Vehicle Aerodynamics, External Aerodynamics of Railway Vehicles, Trucks, Buses and Cars, Berlin, Germany, March 24–25, 2009. [ PDF]
  9. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2008). Control of a separated flow over a smoothly contoured ramp using vortex generators. In IUTAM Symposium on Flow Control and MEMS (pp. 437–441). Springer. [ PDF]
  10. Aider, J.-L., Duriez, T., Wesfreid, J. E., & others. (2007). Contrôle d”un ëcoulement dëcollë en aval d”une rampe descendante au moyen de gënërateurs de vortex solides. In Actes du 18ème Congrès Français de Mëcanique.
  11. Duriez, T., Aider, J.-L., & Wesfreid, E. (2007). Interaction de tourbillons longitudinaux crées par des générateurs de vortex avec une couche limite. Application à un écoulement décollé. In 18ème Congrès Français de Mëcanique (Grenoble 2007). AFM, Maison de la Mëcanique, 39/41 rue Louis Blanc-92400 Courbevoie. [ PDF]
  12. Aider, J.-L., Duriez, T., Wesfreid, J. E., & others. (2006). Modification d”ëcoulement moyen par des gënërateurs de vortex. Application à une rampe descendante. In GDR 2502 Conrôle des Dëcollements.
  13. Duriez, T., Aider, J.-L., & Wesfreid, J. E. (2006). Base Flow Modification by Streamwise Vortices: Application to the Control of Separated Flows. In ASME 2006 2nd Joint US-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering (pp. 791–796). American Society of Mechanical Engineers. [ PDF]
  14. Duriez, T., Aider, J. L., & Wesfreid, J. E. (2006). Non Linear Base Flow Modification by Streamwise Vortices Induced by Vortex Generators Application to the Control of Separated Flows. In 59th Annual Meeting of the APS Division of Fluid Dynamics, November 19–21, Tampa Bay, Florida. APS.

Other

  1. Duriez, T. (2009). Application des gënërateurs de vortex au contrôle d”Ëcoulements dëcollës (PhD thesis). Universitë Paris-Diderot-Paris VII. [ PDF]
  2. Decré, M., Duriez, T., Kuiper, S., & others. (2005, May). System for manipulation of a body of fluid.