Search found 5 matches
- Tue Mar 14, 2023 6:54 pm
- Forum: ROMS Bugs
- Topic: Possible Coding Error in gls_corstep.F: application of gls_Kmin and gls_Pmin to control advection
- Replies: 4
- Views: 15186
Possible Coding Error in gls_corstep.F: application of gls_Kmin and gls_Pmin to control advection
Not 100% sure, but I think there is a coding error in the application of gls_Kmin and gls_Pmin to limit values produced by horizontal and vertical advection of tke and gls for models using any of the GLS-wrapped versions of second moment closure (and hence entering ROMS/Nonlinear/gls_prestep.F &...
- Thu Dec 20, 2018 7:54 pm
- Forum: ROMS Bugs
- Topic: Equation error in GLS model coded into gls_corstep.F
- Replies: 5
- Views: 3324
Re: Equation error in GLS model coded into gls_corstep.F
I had some exchange with Hans Burchard on this with CC to John Warner -- ought to have cc'd you too, Hernan. I summarize that exchange here: Burchard: Around 2005, we had a major update in the turbulence routines coordinated by Lars, and I cannot find any pre-2005 GOTM code where we use the limiting...
- Fri Dec 14, 2018 7:43 pm
- Forum: ROMS Bugs
- Topic: Equation error in GLS model coded into gls_corstep.F
- Replies: 5
- Views: 3324
Re: Equation error in GLS model coded into gls_corstep.F
Here is a Matlab program (with apologies to open-source folk) to demonstrate the problem with the published & ROMS-coded equation for the smoothed Gh limiter, based on 3 different closure options that invoke it in ROMS within gls_corstep.F . High resolution of Gh is needed to see the problem in ...
- Thu Dec 13, 2018 9:32 pm
- Forum: ROMS Bugs
- Topic: Equation error in GLS model coded into gls_corstep.F
- Replies: 5
- Views: 3324
Equation error in GLS model coded into gls_corstep.F
Hi. I've been working on putting different turbulence closures into the COAWST version of ROMS and into GOTM, and I think I have found a longstanding problem in the published account of an aspect of the GLS turbulence closure model, and in the resulting implementation in ROMS. The problem involves a...
- Wed Mar 16, 2016 11:06 pm
- Forum: ROMS Source
- Topic: Turbulent momentum flux down Stokes gradient
- Replies: 0
- Views: 13217
Turbulent momentum flux down Stokes gradient
I've been working on putting in a MY2.5-variant parameterization of Langmuir turbulence (Harcourt,2013; 2015; + newer mods) that entails a component of the vertical momentum flux directed down the gradient of the surface waves' Stokes drift, i.e.: <u'w'> = - K_M du/dz - K_W du^s/dz where u is horizo...