About Me

Lucien Vienne

CNRS research engineer

Centre National de la Recherche Scientifique (CNRS)
Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA)
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Hello World!
My name is Lucien, and welcome to my website. I completed my Ph.D. in 2019 at the CNAM/DynFluid lab. Afterward I worked as a postdoctoral researcher at LMFA and then at CERFACS. I am now continuing my research as a CNRS research engineer at LMFA. My research interests mainly involves fluid dynamics, lattice Boltzmann method, and high-performing-computing. On this website, you will find posts about my research and links to my journal articles.


Current Position

As a CNRS research engineer at Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA), my work focuses on:

  • Leading the animation and coordination of activites related to the lattice Boltzmann method
  • Overseeing product development for ProLB, a high-fidelity fluid flow solver developed at LMFA/ECL in collaboration with a consortium of industrial and academic partners.
  • Contributing to management of the high-performance computing cluster at École Centrale de Lyon, ensuring state-of-the-art computational resources for cutting-edge research.

Education & Experience

  • CNRS research engineer, Jan 2023 - Present, Centre National de la Recherche Scientifique at LMFA
  • Postdoc., Apr 2021 - Dec 2022, Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique
    • Assessment of the aeroacoustic capabilities of the compressible lattice Boltzmann solver ProLB (Mach numbers up to ~ 1).
      • Broadband noise reduction of a linear cascade of outlet guided vanes with the lattice Boltzmann method. Horizon 2020 European project InnoSTAT. Focus on aerofoil turbulence interaction noise.
      • Low-noise landing gear architecture derived from an innovative specific “design-to-noise” process. Horizon 2020 European project INVENTOR. Focus on noise sources localization, design modifications of the landing gear components - simulations loop.
      • Full annulus (360°) aeroacoustic simulations of a modern ultra high bypass ratio fan architecture, 16 rotor blades and 31 outlet guided vanes. Horizon 2020 European project AMICAL. Focus on turbo-machinery.
    • Project includes: design of pre- and post-processing tools, development and improvement of the ProLB code, interactions with the topic manager, work-package leader, project manager and other partners, setting-up the simulation pipeline, data and results analysis, comparison with experiments, attending meetings, writing of deliverables and publications.
      Partners involved: Safran Aircraft Engines, École Centrale de Lyon, ONERA, University of Bristol, COMOTI, Airbus, University of Southampton, NUMECA.
  • Postdoc., Feb 2020 - Mar 2021, Laboratoire de Mécanique des Fluides et d'Acoustique
    • High-fidelity multi-resolution aeroacoustics simulations with the lattice Boltzmann method
      • Research funding by DGAC (french civil aviation) within the public-private ProLB consortium. Main objective is the reduction of spurious noise emission at the grid transition associated with mesh refinement.
      • Development of a reconstruction scheme that depends only on the macroscopic quantities. Accuracy and spectral behavior (von Neumann analysis) of a new class of recursive finite difference LB schemes are examined.
      • Time-stepping strategy for the lattice Boltzmann method is investigated.
  • PhD. student in Fluid mechanics, Oct 2016 - Dec 2019, Conservatoire National des Arts et Métiers at DynFluid laboratory
    • Simulation of multi-component flows by the lattice Boltzmann method and application to the viscous fingering instability
      • Development of a new lattice Boltzmann method for the simulation of multiple miscible species. For pure diffusion cases, Maxwell-Stefan equations are recovered. Implementation is easier compare to previous models.
      • Simulation of the viscous fingering instability. Effects of ternary diffusion are highlighted.
      • HPC coding from scratch using FORTRAN and Python with MPI and OpenMP paradigms. Simulations (O(1000) cores) performed on national supercomputers.
  • MSc. student in Numerical mechanics (dual master's degree), Sep 2015- Sep 2016, Université Côte d'Azur
  • MSc. student in Fluid mechanics and Marine engineering, Sep 2013- Sep 2016, SeaTech school of engineering