Université Paris-Saclay

  Fluides, Automatique
  et Systèmes Thermiques

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Laboratory FAST (Fluides, Automatique et Systèmes Thermiques) is a CNRS research laboratory (UMR 7608), associated with University Paris-Saclay.

Research areas

Head: H. Auradou

Focus on a project

Collision of fluid immersed grains

P. Gondret
Collaborations: T. Chastel, A. Mangruel

The collision of a sphere with a solid wall immersed in a fluid is studied with an interferometric technique to solve the collision process in time (resolution 2 μs) and space (resolution 0.2 μm). The influence of roughness on the collision process is characterized by using controlled microtexture walls. The rebound or not of the sphere can be characterized according to the number of Stokes of collision and the geometric and elastic characteristics of the wall. The detailed modelling of hydrodynamics makes it possible to highlight the viscous dissipation occurring during the collision process.

• A. Mongruel, P. Gondret, J. Fluid Mech. 896, A8 (2020)

• T. Chastel, P. Gondret, A. Mongruel, J. Fluid Mech. 805, 577 (2016)

Other experiments in this research area

We moved to our new building

Since March 2019, the laboratory FAST has moved to the new building Pascal (building 530).

Visit the new building


Next FAST-LIMSI seminars:

Jeudi 6 Avril 2023 à 14h
Frédéric Blanc (Institut de Physique de Nice), Rhéologie des suspensions concentrées soumises à des cisaillements croisés

Laboratory FAST is partner of Labex LASIPS and Labex PALM.

Laboratory FAST is member of the French-Argentine IRP (International Research Project) "Ingénieries vertes par la mécanique des fluides" (IVMF).

L'impermanence du monde - La physique de l'éphémère

E. Guyon, J.-P. Hulin, F. Moisy, M. Rabaud (Flammarion, 2022).

Theoretical Mantle Dynamics

N. Ribe (Cambridge University Press, 2018).

Physical Hydrodynamics - 2nd edition

E. Guyon, J.P. Hulin, L. Petit, C.D. Mitescu (Oxford University Press, 2015).

La matière en désordre

E. Guyon, J.P. Hulin, D. Bideau (2014).

Hydrodynamique physique - 3e édition

E. Guyon, J.P. Hulin, L. Petit (2012).