[pferro]

Hello,

I was wondering if it's possible to generate a sea state with "irregular wave directions".

I read the manual but didn't find any solution for doing such a thing (maybe I miss something).

Best regards,

Paulin

[ngj]

Hi Paulin,


Thank you for your question. I actually never wrote that part of the code, but it should be reasonably easy to do in the following fashion:

• Create objects for the wave spreading (see in src/waves2FoamProcessing folder), this should obviously include the unidirectional case.
• The directionally spread waves can either be generated with single or double summation principal for the generation of the irregular wave field (there is literature on the pros and cons). Here, single summation will definitely be more favorable, when it comes to computational speed.
• Note that the wave spectra are currently assuming a unidirectional wave field, so you need to correct that part of the code as well, where the linear wave number (scalar) is multiplied with the wave direction (still in the preprocessing step).
• Once the preprocessing part is handled, I expect that the wave generation with relaxation zones should work. However, please note that the GABC has not been implemented for oblique wave generation.

I hope that this is useful.


Kind regards,



Niels

[pferro]

Hello Niels,

Thank you for your very detailed answer. As soon as I have enough time I will try to follow your instructions.

Best regards

Paulin

[ngj]

Hi Paulin,


When you succeed, I would be interested in adopting the code into the public version of waves2Foam.


Kind regards


Niels

[pferro]

(if I suceed),
Yes I will share it.
Paulin