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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › MULTIPLE ERRORS: FPSO MOORING ANALYSIS › Reply To: MULTIPLE ERRORS: FPSO MOORING ANALYSIS

March 28, 2024 at 3:37 pm
Shuangxing Du
Ansys Employee

Aqwa requires the external hull surface normal direction points outwards.  Please check the hydrostatic properties in the Hydrodynamic Diffraction: (1) Displacement, (2) Hydrostatic restoring stiffness, K33. The buoynancy force should be the same of the structure gravity force, and K33 should be positive.

In Static Stability analysis, please check (1) the lengths of the cables and (2) the total cable force in z direction, and the gravity force, hydrostatic force.