Fluid Mechanics and Acoustics Laboratory - UMR 5509

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


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Home > Teams > Fluides Complexes et Transferts > Environnement > AIR - Atmosphere, Impact & Risk

Facilities

 Facilities

The AIR group has a unique set of experimental facilities in France :

  • A large industrial wind tunnel for the study of flow and atmospheric dispersion on real sites
  • An academic wind tunnel for the study of flow and dispersion on idealised academic configurations
  • An experimental tunnel for the study of natural convection and tunnel fires

Large industrial wind tunnel


Large industrial wind tunnel.
(c) LMFA - Equipe AIR

It was constructed in 1977 in collaboration with EDF. This wind tunnel is used to study the dispersion in the atmospheric boundary layer.

Dimensions :

  • Length = 14 m.
  • Width = 3,8 m.
  • Height = 2 m.

Specifications :

  • Flow velocity : [1;10] m/s.
  • Stability : neutre.

Measurement techniques :

  • Hot Wire Anemometry.
  • Laser Doppler Anemometry.
  • Particle Image Velocimetry.
  • Flame Ionization Detector for concentration.

Academic wind tunnel


Academic wind tunnel.
(c) LMFA - Equipe AIR

This academic wind tunnel has a small width, wich allows 2D analysis.

Dimensions :

  • Length = 9 m.
  • Width = 0,7 m.
  • Height = 1 m.

Measurement techniques :

  • Hot Wire Anemometry.
  • Laser Doppler Anemometry.
  • Particle Image Velocimetry.
  • Flame Ionization Detector for concentration.

Experimental tunnel


Confined fire tunnel.
(c) LMFA - Equipe AIR

This experience allows us to study fires in tunnels :

  • Smoke stratification.
  • Ventilation strategies.
  • ...

Dimensions :

  • Lenght = 1,8 m.
  • Width = 0,36 m.
  • Height = [0,18;0,36] m.

Measurement techniques :

  • Particle Image Velocimetry.
  • Laser Doppler Anemometry.
  • Laser tomography (visualization)