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Why is "urms" calculated prior to the wave dissipation?

CB
Cyprien Bosserelle, modified 7 Years ago.

Why is "urms" calculated prior to the wave dissipation?

Capillary Posts: 0 Join Date: 11/22/11 Recent Posts
In the instationary wave step Urms is calculates from Uorb in line 553 but Uorb is calculated line 317 before the dissipation is applied to the wave energy. Why isn't urms calculated after the wave dissipation as in prior versions?
Thanks for clarifying.
Cyprien
Bas Hoonhout, modified 7 Years ago.

RE: Why is "urms" calculated prior to the wave dissipation?

Infra-gravity Posts: 362 Join Date: 5/20/11 Recent Posts
Hi Cyprien,

I guess what you mean is that uorb is based on H of the previous timestep. Now urms is based on uorb, urms is also based on the previous timestep instead of the current timestep. I think this is wrong.

You may try to move the computation of uorb to after the computations of H. uorb is a saved variable, so this shouldn't make a difference for the bed friction contribution and should fix the computation of urms.

I put the issue on our super new issue tracker: https://issuetracker.deltares.nl/browse/XBEACH-8. You might post a patch there.

Bas
CB
Cyprien Bosserelle, modified 7 Years ago.

RE: Why is "urms" calculated prior to the wave dissipation? (Answer)

Capillary Posts: 0 Join Date: 11/22/11 Recent Posts
Thnaks for the reply.
It is a quick fix, just need to uncomment line 539 in wave instationary.
Cheers
Cyprien
Bas Hoonhout, modified 7 Years ago.

RE: Why is "urms" calculated prior to the wave dissipation?

Infra-gravity Posts: 362 Join Date: 5/20/11 Recent Posts
Ha! You are right, I looked over that one :-)
AJ
Agmus Jeremy, modified 2 Months ago.

RE: Why is "urms" calculated prior to the wave dissipation?

Capillary Posts: 1 Join Date: 1/21/20 Recent Posts
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RE: Why is "urms" calculated prior to the wave dissipation?

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