Over the summer of 2024 I had a fun time being an intern at Fraunhofer IWES in Oldenburg Germany and during that time I learned about the the CFD sofware of OpenFOAM. While trying to learn it ins and outs and how to use it, I figured the only option learning it would be to simulate the some fluid flow over a cow, and then make some pictures out of it. So I decided to use the motorbike example as a starting point and finagled the files around till I got out this magificent image.

The vectors displayed the direction and magnitute of the velocity of the fluid and are colored by the pressure on the surface of the cow. Some details about this simulation:

• RAS kOmegaSST model which models some of turbulelnce involved and spits out an everage of the quantities. After reaing a bit more this requires some care in the meshing of the model which I definitely didnt properly take care of.
• Model ripped out from somewhere on thingiverse (can't find the original link). Processed it a bit with Blender to make it smooth and closed. Then processed it with the OpenFOAM tool snappyHexMesh.
• Visualisation with Paraview