Lille Optical Metrology

MéOL
Observation and environment, lasers and their applications Platform Science for a changing planet

The MéOL platform is a national center of expertise in the field of optical and laser metrology applied to fluid mechanics, combustion and atmospheric physicochemistry. Our expertise covers scientific fields ranging from the study of complex flows and turbulence phenomena in wind tunnels and turbomachinery to the physico-chemical analysis of indoor/outdoor air and combustion processes. We are open to all academic and industrial collaborations and propose services in line with our expertise.

Informations

Scientific director: Christophe Cuvier
Scientific director: Xavier Mercier
Technical director: Amaury Lahccen
Technical director: Pierre Braganca

https://plateforme-meol.univ-lille.fr/

Bâtiments C5 et C11, Avenue Mendeleiev
Campus Cité scientifique, Université de Lille
59655 VILLENEUVE D'ASCQ

Mots-clés

Laser diagnostics, aerosols, air pollution, soot, combustion, flows, imaging, spectroscopy, Metrology for the measurement of species, Optical metrology for Fluid Mechanics

Localisation

  • Optical metrology
  • Laser diagnostics in reactive media
  • Spectroscopy
  • Laser induced fluorescence (LIF)
  • Cavity Ring-Down Spectroscopy (CRDS) laser absorption spectroscopy
  • Infrared absorption by tunable diode laser (TDLAS) or by quantum cascade laser (QCLAS)
  • Laser Induced Incandescence (LII)
  • High rate fluorescence assays after gas expansion (FAGE)
  • Multipass absorption
  • Particle image velocimetry (PIV) as well as its variants: stereoscopic and tomographic PIV
  • Lagrangian particle tracking (particle tracking velocimetry shake the box)
  • Ultra-fast viewing
  • Development of innovative measurement tools

Examples of projects:

  • Characterization of soot particle formation processes in combustion processes
  • Characterization of the emission of particles leaving a diesel vehicle
  • Digital holography measurement in the Italian superpipe Ciclope
  • Laboratory and field study of oxidation processes involving HOx radicals using the FAGE technique
  • Complex flow study by PIV
  • Physico-chemical analysis of indoor / outdoor air
  • Analysis of turbulence phenomena in a wind tunnel
  • Study of combustion processes by laser diagnostics (FIL, CRDS, cw-CRDS, IIL ...)
  • Study of the measurement of atmospheric pollutants by laser diagnostics (FIL, cw-CRDS, FAGE, etc.)
  • Detailed study of turbulence using high resolution particle image velocimetry (PIV, SPIV, tomoPIV, STB)
  • Quantitative measurement of polycyclic aromatic hydrocarbons (PAHs)
  • Measurement of radical species (OH, HO2, etc.) in the atmosphere

We possess a wide range of equipment:

  • Experimental setups coupling Laser Induced Fluorescence (LIF) and Cavity Ring-Down Spectroscopy (CRDS) for stable species (PAHs), radicals (OH, CH, CN, NCN, NCO…) and atomic (H, O) generated by combustion processes
  • Experimental setups of Laser Induced Incandescence (LII) for soot particle measurements
  • Fluorescence Assay after Gas Expansion (FAGE) for OH measurement in the atmosphere and its reactivity
  • Experimental setups for 2D2C and 2D3C PIV, tomoPIV and time-resolved tomoPIV for the study of wall turbulence, wake and turbomachinery

Private
ONERA, CEA Saclay

Academic
LAMIH, LRGP, IMT Douai, ULCO, IRSN, CEA, IREPSE

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