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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › 6 DoF problem › Reply To: 6 DoF problem

September 12, 2024 at 12:43 pm
Federico
Ansys Employee

Hello Alberto, 

this message gets printed when the determinant of Ixx*Iyy*Izz is smaller than the minimum cutoff moments coefficient, which is 1e-20. Even if there were a way to reduce this threshold, these numbers are so small that you risk having a lot of floating point error.

Instead, we would recommend rescaling your problem.