[CenterRime]

Good day.

To calibrate the calculations, we performed a test calculation of the drag coefficient and resistance force for bodies of a simple shape.
Cylinder - 0.77
Cylinder by face - 1
Cube - 1.17
Square plate 1.84
Hemisphere by face 0.67
Hemisphere 0.66
Sphere 0.066
Airfoil 0.07

Flow 3 m/sec2
Case prepared in CfdOF for FreeCad

Drag coefficient is about 15% above average published experimental values
Airfoil have the same coefficient as sphere.

Calibration it is need for catamarans hulls hydrodynamic passports.
Any advice for more accurate calibration is really appreciated.

Sphere pressure and flow velocity
Sphere.png
Cube pressure distribution
Cube flow velocity
flow_Cube_Ux.jpg
Physics_model.png