About Me
Lucien Vienne
CNRS research engineer
Centre National de la Recherche Scientifique (CNRS)Laboratoire de Mécanique des Fluides et d'Acoustique (LMFA)
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.
- Assessment of the aeroacoustic capabilities of the compressible lattice Boltzmann solver ProLB (Mach numbers up to ~ 1).
- 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.
- High-fidelity multi-resolution aeroacoustics simulations with the lattice Boltzmann method
- 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.
- Simulation of multi-component flows by the lattice Boltzmann method and application to the viscous fingering instability
- 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