[Nam8]

Dear Forum,

I am trying to simulate a rugby ball to generate the lift and drag forces and I am getting negative values for the forces and would request the forum on the way forward to fix the error. Computation power is limited and have to get results with coarse mesh.

Base Size - 0.01 to 0.008
Target Surface Size - 0.01 to 0.008
Minimum Surface Size - 0.01 to 0.008
Surface Growth Rate - 1.2
Number of Prism Layers - 5
Prism Layer Stretching - 1.2
Prism Layer Total Thickness - 0.0343
Volume Growth Rate- 1.3
velocity - 20m/s