A three-dimensional experimental investigation of the structure of the spanwise vortex formed by a shallow vortex dipole

Julie Albagnac (1) , Frédéric Moulin (2) , Olivier Eiff (2) , Laurent Lacaze (2) , Pierre Brancher (2)

1 Brown University
2 IMFT - Institut de mécanique des fluides de Toulouse

The three-dimensional dynamics of shallow vortex dipoles is investigated by means of an innovative 3D-3C (three dimensions, three components) scanning PIV technique. In particular, the three-dimensional structure of a frontal spanwise vortex is characterized. The technique also allows the computation of the pressure field, which is not available using standard 2D PIV measurement. The influence of such complex vortex structures on the mass transport is discussed in light of the available pressure field.

Mots clés: Vortex dynamics; Shallow flows; 3D-3C; PIV

Domaines: Dynamique des Fluides [physics.flu-dyn]; Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Julie Albagnac, Frédéric Moulin, Olivier Eiff, Laurent Lacaze, Pierre Brancher. A three-dimensional experimental investigation of the structure of the spanwise vortex formed by a shallow vortex dipole. 3rd International Symposium on Shallow Flows - ISSF2012, Jun 2012, Iowa city, United States. ⟨hal-00920962⟩