Question regarding wave excitation force output in RAFT

[hymdrj]

Dear all,

I am currently comparing the wave excitation force calculated from RAFT with the results obtained from WAMIT.

During the comparison, I found that the wave excitation force from RAFT showed a different trend compared to WAMIT. However, after dividing the RAFT excitation force by zeta, which I understand to be the wave amplitude at each frequency, the RAFT results showed a trend similar to the WADAM results.

Based on this observation, I would like to confirm whether the wave excitation force output from RAFT already includes the wave amplitude effect.

Could you please confirm the following points?

Best regards

[lucas-carmo]

Hi @hymdrj

Correct, RAFT provides the force/moment amplitude at each frequency whereas WAMIT/similar tools usually provide the nondimensional force/moment.

Best,
Lucas