Reply To: Single floating structure Ansys AQWA

[Shuangxing Du]

(1) Please check and compare the actual responses with the Hydrodynamic Diffraction RAOs if the mooring lines are included. Please also use smaller wave amplitudes.  If the wave direction is 0 or 180 degrees, and the structure and mooring configuration are port-starboard symmetric, the sway and yaw motions should be very small.

(2) Please check the input data file of TimeResponse.dat in the subfolder of your project working folder. The frequency-independent damping matrix should be in the Data Category 7 with the key word of FIDP (see Aqwa reference, section 11.6.1) if it is included.  The mooring definition is in Data Category 14 in this input data file.

11.6.1. The FIAM/FIDP Data Record - Frequency Independent Added Mass/Damping Matrices