SWAN wave spectrum funwave spectrum

[João Ribeiro]

Hello,

I am trying to convert a SWAN wave spectrum file (1D and 2D) to Funwave.

I have tried many methods to achieve this, but I seem to be missing a step. Could anyone share some information on how to do this correctly?

Is the Funwave spectrum in m²/Hz/degrees?

I can only generate a wave with a few centimetres!

My files are attached.

Also, how are the frequencies calculated for the JONSWAP options?

What is the correct way to configure the input.txt file for these cases?

Regards,

[Fengyan Shi]

You can use WK_DATA2D, but don’t use the energy spectral density in the spectral input file. Use 'wave amplitude' in meters for each spectral component. 

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<input_JonSwap1D_Sines.txt><WMK03.chr><WMK03_1D.spc><WMK03_2D.spc><wave1d.txt>

[Rafael Guedes]

Another option is to use the  wavespectra python library. We have reader and writer methods for SWAN and FUNWAVE spectra there, you could use the read_swan method to read your swan file, and then write the FUNWAVE one using the to_funwave method to write one or multiple funwave files. There is a Notebook here with some usage examples.

Rafael

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[João Ribeiro]

Than you for the quick replies, I will check out the wavespectra library.

Regards,