Cavitating foil with vortex field visualised with isosurfaces of the Q criterion of 10000. Wall coloured by pressure and vortices by velocity magnitude.

Cavitating Foil With Vortex Rolls

Cavitating foil with vortex field visualised with isosurfaces of the Q criterion of 10000.  Wall coloured by pressure and vortices by velocity magnitude.
Cavitating foil with vortex field visualised with isosurfaces of the Q criterion of 10000. Wall coloured by pressure and vortices by velocity magnitude.

I was doing some publicity images for work and quite liked this one.  It is a visualisation of the surface pressure fields and vorticies on a cavitating NACA 0009 foil.  The surfaces as colour by pressure and the vortices, visualised as the 10000 mark of the Q criterion, are coloured by the velocity magnitude.  The cavitation was handled by a custom in house module for OpenFOAM that implements the Singhal “Full Cavitation Model”.

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