Difference between tomawac and swan and Mike SW in wind wave

user_14008 · October 9, 2020, 3:14am

I am using the method of coupling [name removed] with TELEMAC2D to calculate the wind wave field of inland lake TAIHU lake.

I compared the results with other results calculated by SWAN and [name removed], and found that the results calculated by TOMAWAC are quite different.

I think the difference may be due to the different settings of DEPTH-INDUCED BREAKING DISSIPATION. I have uploaded all the files needed for the calculation.

I hope you can give me some advice on why the resluts caculated by TOMAWAC are quite different from using SWAN and [name removed], it would be a great help for me .

Best regards.

user_14008 · October 9, 2020, 3:16am

caculating file

user_14008 · October 9, 2020, 3:18am

It’s hard to upload the caculation file…

TH1.slf (540 KB)
TH1_2020-10-09.cas (1.72 KB)
TH1BC.cli (84.4 KB)
TH1TOM_2020-10-09.cas (5.67 KB)
TH1WAVEBC.cli (84.4 KB)
anaven_2020-10-09.f (3.11 KB)

user_2910 · October 9, 2020, 8:40am

Hello,

First of all, with a 60s timestep there is no way breaking is resolved. Especially with a peak period in the order of 1s. If your model involves wave breaking, then your timestep should be around 1s or less in your case.

Also, have a look at this thread (#4323)

[name removed]

user_14008 · October 10, 2020, 8:38am

I adjusted the time step to 1 s, but the results did not change significantly, and I found that there was a significant difference in the results after one hour.I am wondering if there is a problem with the calculation settings.

user_8473 · October 20, 2020, 2:18pm

Hello

You forgot to put the file wind that is needed by telemac2d as ASCII ATMOSPHERIC DATA FILE.

I see that you chose Battjes and [name removed] as model of breaking disssipation, i guess you did the same with other codes.

[name removed]