Turbulence doesn't play a role

[Chengyue810]

When I was trying to calculate the frequency domain response of raft, I found that the wind field's profile power index and turbulence intensity had no effect on the results, which is inconsistent with common understanding. I would like to ask if this is normal for raft? Perhaps it focuses more on waves and ignores the influence of the wind field.

[lucas-carmo]

Hi @Chengyue810

You're correct, RAFT currently does not account for the frequency-dependent aerodynamic loads induced by turbulent wind. The capability is there but it is currently commented out (see

RAFT/raft/raft_model.py

Line 1091 in 1a25f98

# rotor excitation

) because there's something wrong. We've found some bugs recently but the problem isn't fully solved yet, so we're still working on it.

[Chengyue810]

@lucas-carmo Thank you. I found the problem you mentioned when I was studying the source code today. I guess there may be a problem with the transmission of the wind spectrum function. I am currently studying how to modify it. Thank you very much for your contribution.

[lucas-carmo]

Sweet, thank you! I hope you can find what's going on 😁

Btw here's the commit with the recent bug fixes that I mentioned: c8b1f3a
That change will be released in v1.5.0, which should be out later today.