Fluid Mechanics and Acoustics Laboratory - UMR 5509

LMFA - UMR 5509
Laboratoire de Mécanique des Fluides et d’Acoustique

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Loïc Méès

CNRS researcher
Tel.: (33) 04 72 18 61 95

My research activities are concerned with light scattering by particles and its applications to metrology in two phase flows.

Optical diagnostic in multiphase flows

Optical techniques are often used in fluid mechanics as they are non-intrusive and accurate. Backlit imaging, interferometric imaging, out of focus imaging and Inline Digital Holography are some examples of techniques that can be combined or further developped to provide the required information depending on experimental constraints and research objectives.

Interaction between laser light and particles

Interaction between a femtosecond pulse and a water droplet (GLMT)

Generalized Lorenz-Mie Theories describe interactions between laser beams and particles with regular shapes (spheres, cylinders, ...), in a rigorous electromagnetic framework. They are used as reference to develop or to test the limits of alternative models, which would be more suitable for a given application. Scalar theories of diffraction or geometrical optics models (more or less elaborated) for example. Read more...

Evaporating droplets tracking by means of Digital Holography

Digital Holography is used to track droplets evaporating in a strong isotropic and homongeous turbulence. To acheive the required accuracy in 3D position and diameter measurement, an ’inverse problem’ approach for hologram restitution is adopted and developped through a long term collaboration with the "non-conventional imaging" team of Laboratoire Hubert Curien (Université Jean Monnet, Saint Etienne). Read more...

recent publications


Cabut D, Michard M, Simoëns S, et al. Analysis of the water flow inside tire grooves of a rolling car using refraction particle image velocimetry. Phys. Fluids. 2021;33:032101.


Méès L, Grosjean N, Marié J-L, Fournier C. Statistical Lagrangian evaporation rate of droplets released in a homogeneous quasi-isotropic turbulence. Phys. Rev. Fluids. 2020;5:113602.


Berdeu A, Flasseur O, Méès L, et al. Reconstruction of in-line holograms: combining model-based and regularized inversion. Opt. Express. 2019;27:14951–14968.


Jolivet F, Momey F, Denis L, et al. Regularized reconstruction of absorbing and phase objects from a single in-line hologram, application to fluid mechanics and micro-biology. Opt. Express. 2018;26:8923–8940.


Marié J-L, Tronchin T, Grosjean N, et al. Digital holographic measurement of thLagrangian evaporation rate of droplets dispersing in a homogeneous isotropic turbulence. Exp. Fluids. 2017;58:11.


Sentis MPL, Onofri FRA, Méès L, Radev S. Scattering of light by large bubbles: Coupling of geometrical and physical optics approximations. J. Quant. Spectrosc. Radiat. Transfer. 2016;170:8–18.
Verrier N, Grosjean N, Dib E, Méès L, Fournier C, Marié J-L. Improvement of the size estimation of 3D tracked droplets using digital in-line holography with joint estimation reconstruction. Meas. Sci. Technol.. 2016;27:045001.


Marié J-L, Grosjean N, Méès L, et al. Lagrangian measurements of the fast evaporation of falling diethyl ether droplets using in-line digital holography and a high-speed camera. Exp. Fluids. 2014;55:1708.
Mauger C, Méès L, Michard M, Lance M. Velocity measurements based on shadowgraph-like image correlations in a cavitating micro-channel flow. Int. J. Multiph. Flow. 2014;58:301–312.
Verrier N, Fournier C, Méès L, Fournel T. In-line particle holography with an astigmatic beam: Setup self-calibration using an. Appl. Optics. 2014;53:G147–G156.


Lebrun D, Méès L, Fréchou D, Coëtmellec S, Brunel M, Allano D. Long time exposure digital in-line holography for 3-D particle trajectography. Opt. Express. 2013;21:23522–23530.
Méès L, Grosjean N, Chareyron D, Marié J-L, Seifi M, Fournier C. Evaporating droplet hologram simulation for digital in-line holography setup with divergent beam. J. Opt. Soc. Am. A. 2013;30:2021–2028.
Seifi M, Fournier C, Grosjean N, Méès L, Marié J-L, Denis L. Accurate 3D tracking and size measurement of evaporating droplets using in-line digital holography and. Opt. Express. 2013;21:27964–27980.


Chareyron D, Marié J-L, Fournier C, et al. Testing an in-line digital holography 'inverse method' for the Lagrangian tracking of evaporating droplets in homogeneous nearly isotropic turbulence. New J. Phys.. 2012;14:043039.
Idlahcen S, Rozé C, Méès L, Girasole T, Blaisot J-B. Sub-picosecond ballistic imaging of a liquid jet. Exp. Fluids. 2012;52:289–298.
Mauger C, Méès L, Michard M, Azouzi A, Valette S. Shadowgraph, Schlieren and interferometry in a 2D cavitating channel flow. Exp. Fluids. 2012;53:1895–1913.