Search found 34 matches

by thomas.roc
Fri Feb 27, 2015 7:56 pm
Forum: ROMS Discussion
Topic: Writing boundary files with Python
Replies: 1
Views: 1441

Writing boundary files with Python

Dear community,

Could anyone direct me to a python script/package/project to write netcdf boundary files?
I have a bunch of depth-averaged velocity and sea surface elevation timeseries with which I would like to force a 3D ROMS simulation.

Thanks in advance,

-T-
by thomas.roc
Thu Jan 15, 2015 3:44 pm
Forum: ROMS Tools and Techniques
Topic: Vortex Generator
Replies: 0
Views: 1583

Vortex Generator

Dear Community, Here is the thing. I would like to generate eddy/vortex-like structures which would travel in a simplified one-direction open-boundary flow. Firstly, does anyone have any idea if it is even possible to generate/impose such structures? Secondly, if it is indeed possible, do you have a...
by thomas.roc
Tue Dec 09, 2014 4:31 am
Forum: ROMS Tools and Techniques
Topic: TPXO to ROMS EXPRESS (tide extraction software)
Replies: 40
Views: 22949

Re: TPXO to ROMS EXPRESS (tide extraction software)

Thank you all,

Here is an early christmas present, a python translation of John's tpxo8_to_roms package.
I've started testing it...so far, so good.

Enjoy

-T-
by thomas.roc
Fri Dec 05, 2014 12:56 am
Forum: ROMS Tools and Techniques
Topic: TPXO to ROMS EXPRESS (tide extraction software)
Replies: 40
Views: 22949

Re: TPXO to ROMS EXPRESS (tide extraction software)

Dear all, I realize this thread is rather old but I noticed this odd line in TPXO2ROMS_v4pt1.m: line 253: ncwrite(fnOut,'tide_Vphase',vamp) Should not it be "ncwrite(fnOut,'tide_Vphase',vpha)" rather? BTW, if some could direct me to a python package permitting similar functionality (i.e. creating ti...
by thomas.roc
Wed Oct 30, 2013 1:13 pm
Forum: ROMS Tools and Techniques
Topic: Forcing a turbulence spectrum
Replies: 0
Views: 1081

Forcing a turbulence spectrum

Dear community, I would like borrow your brains for a moment. Although I am guessing that this is out of ROMS' capability scope, I was wondering if there would be a way, given a small-enough time step and a large-enough number of iterations, to impose a turbulence spectrum (i.e. Von-Karman like-spec...
by thomas.roc
Tue Apr 09, 2013 10:18 am
Forum: ROMS Tools and Techniques
Topic: CoastGrid as grid generator
Replies: 1
Views: 1647

CoastGrid as grid generator

Greetings everyone, I was wondering if anyone has ever used CoastGrid to generate grid files (i.e. *.nc) !? I find CoastGrid interface pretty slick and straight forward and easy to use. it is fairly simple to generate the *.dat grid files yet I miss one major thing: how do you convert those files in...
by thomas.roc
Thu Jan 10, 2013 8:53 am
Forum: ROMS Discussion
Topic: Create a 3D mask as a new input file
Replies: 3
Views: 1069

Re: Create a 3D mask as a new input file

Unfortunately, it is a bit more complex than that. During my PhD, I have developed a methodology for representing hydrodynamic effects induced by individual tidal current turbine within ROMS (i.e. http://mhk.pnnl.gov/wiki/images/1/1b/Roc_et_al._2013.pdf). Now I am investigating the hydrodynamics ind...
by thomas.roc
Wed Jan 09, 2013 2:42 pm
Forum: ROMS Discussion
Topic: Create a 3D mask as a new input file
Replies: 3
Views: 1069

Create a 3D mask as a new input file

Hi ROMS community, I would like to create something like a 3D mask which I could use as an input file in order to turn on and off my custom momentum and turbulence source terms. What is the best approach to achieve such thing? FYI, I have successfully implemented these custom source terms yet I use ...
by thomas.roc
Tue Jan 08, 2013 8:08 am
Forum: ROMS Tools and Techniques
Topic: READ_PHYPAR - could not find input file: ocean_frc.nc
Replies: 2
Views: 2963

Re: READ_PHYPAR - could not find input file: ocean_frc.nc

Yeah I spotted this one as well however the problem doesn't come from that...but thank you anyway. I have actually cracked my problem though. In my input file (i.e. *.in) the open-boundary conditions for temperature and salinity were set to "Clamped" which imply to provide some values, analytic or d...
by thomas.roc
Mon Jan 07, 2013 6:07 pm
Forum: ROMS Tools and Techniques
Topic: READ_PHYPAR - could not find input file: ocean_frc.nc
Replies: 2
Views: 2963

READ_PHYPAR - could not find input file: ocean_frc.nc

Hi everybody, I am trying to run a very simple case (a simple rectangular channel with a constant inflow). My simulation is compiling without any trouble but when I am running the executable this message appears: "READ_PHYPAR - could not find input file: ocean_frc.nc" I guess this is due to a consis...
by thomas.roc
Thu Oct 13, 2011 7:21 am
Forum: ROMS Documentation
Topic: Output files coordinates
Replies: 2
Views: 2638

Re: Output files coordinates

Thank you very much Kate !

-T-
by thomas.roc
Wed Oct 12, 2011 1:24 pm
Forum: ROMS Bugs
Topic: Restarting a Tidal Flow
Replies: 0
Views: 893

Restarting a Tidal Flow

Hi Guys, I face troubles restarting a tidal flow simulation from an *_his.nc file. The model restart perfectly using the *_his.nc but the tidal forcing doesn't follow and damp to zero after the first steps. Notice that the tidal forcing is specified through the ana_fobc file as follow: fac=0.75_r8 !...
by thomas.roc
Wed Oct 12, 2011 1:03 pm
Forum: ROMS Documentation
Topic: Output files coordinates
Replies: 2
Views: 2638

Output files coordinates

Hi everyone,

Is there a flag or an option allowing to choose between x-y and/or lon-lat coordinates for the output files, particularly the history files ?

Cheers,


-T-
by thomas.roc
Fri Dec 03, 2010 3:20 pm
Forum: ROMS Bugs
Topic: Rule of thumb for vertical backgroung mixing coefficients
Replies: 0
Views: 1080

Rule of thumb for vertical backgroung mixing coefficients

Hi folks,

I was wondering if there is any usual rule thumb (or related references) to parameterize a priori the set of background vertical mixing coefficients ( AKT_BAK, AKV_BAK, AKK_BAK and AKP_BAK) ?

Cheers,

-T-
by thomas.roc
Fri Jul 30, 2010 9:56 am
Forum: ROMS Tools and Techniques
Topic: Generic Length Scale Units
Replies: 2
Views: 1522

Re: Generic Length Scale Units

Thank you very much for the clarification.

-T-
by thomas.roc
Tue Jul 27, 2010 3:46 pm
Forum: ROMS Tools and Techniques
Topic: Generic Length Scale Units
Replies: 2
Views: 1522

Generic Length Scale Units

Hello everyone,

Quick question, does anyone know what are the units of gls in the output files ? m3/s2 as defined in varinfo.dat or the units of the length scale corresponding to the chosen two-equation turbulence model (e.g.: s-1 for k-omega, m2/s3 for k-epsilon, m3/s2 for k-kl,...) ?

Cheers


-T-
by thomas.roc
Tue Mar 30, 2010 8:13 am
Forum: ROMS Tools and Techniques
Topic: Adding a turbulence dissipation rate production term
Replies: 4
Views: 3266

Re: Adding a turbulence dissipation rate production term

That's what I thought as well !

Thank you so much for the help
by thomas.roc
Mon Mar 29, 2010 2:24 pm
Forum: ROMS Tools and Techniques
Topic: Adding a turbulence dissipation rate production term
Replies: 4
Views: 3266

Re: Adding a turbulence dissipation rate production term

Absolutely spot-on, I'd like to add a source term on the RHS of the previously mention equation number 13, function of the squared production of turbulent kinetic energy.
So how do I proceed ?

Cheers
by thomas.roc
Fri Mar 26, 2010 2:45 pm
Forum: ROMS Tools and Techniques
Topic: Adding a turbulence dissipation rate production term
Replies: 4
Views: 3266

Adding a turbulence dissipation rate production term

Hi everyone, I would like to add a turbulence dissipation rate production term into the GLS turbulence closure and more precisely in the GLS equation. Physically speaking it would be a quadratic function of the production of turbulence kinetic enegy. So far I am struggling with numerical and impleme...
by thomas.roc
Tue Dec 01, 2009 5:00 pm
Forum: ROMS Discussion
Topic: svn revision 408 - ana_initial error
Replies: 4
Views: 1571

Re: svn revision 408 - ana_initial error

Spot on John !

Many thanks to you both.


Thomas
by thomas.roc
Fri Nov 27, 2009 11:43 am
Forum: ROMS Discussion
Topic: svn revision 408 - ana_initial error
Replies: 4
Views: 1571

Re: svn revision 408 - ana_initial error

Hi Kate,

Sorry for the lateness of my answer.

I have just checked my analytical.f90 and yes indeed, my ana_initial module is coming from here.
By the way no trace of ana_NLMinitial_tile in analytical.f90. I have got instead ana_initial_tile.

Thanks a lot for your help.
by thomas.roc
Wed Nov 18, 2009 2:05 pm
Forum: ROMS Discussion
Topic: svn revision 408 - ana_initial error
Replies: 4
Views: 1571

svn revision 408 - ana_initial error

Hi every one, I have just upgraded my ROMS code through SVN and rerun a case which was working perfectly before the upgrading and unfortunately this following error message now pops up during the compilation: analytical.f90(336): error #6645: The name of the module procedure conflicts with a name in...
by thomas.roc
Mon Nov 09, 2009 1:39 pm
Forum: ROMS Tools and Techniques
Topic: SeaGrid mex files for 64-bit Linux machine
Replies: 3
Views: 2972

Re: SeaGrid mex files for 64-bit Linux machine

Hi Howard,

I'm struggling with the similar problem right now.
Have you managed to sort this out ?

Cheers
by thomas.roc
Thu Jun 25, 2009 8:30 am
Forum: ROMS Tools and Techniques
Topic: Bodyforce
Replies: 0
Views: 870

Bodyforce

Hi everyone, It's probably a dummy question but can anyone explain me the physical meaning of "wrk" in rhs3d.F in the part reserved for the bodyforce expression. ! ! Apply bottom stress as a bodyforce: determine the thickness (m) ! of the bottom layer; then add in bottom stress as a bodyfoce. ! DO j...
by thomas.roc
Tue Jun 02, 2009 3:28 pm
Forum: ROMS Problems
Topic: Compiling error when using ANA_BMFLUX
Replies: 3
Views: 1442

Re: Compiling error when using ANA_BMFLUX

Thank you Kate. Indeed I am not using periodic boundary conditions but I am using DISTRIBUTE (running ROMS in parallel on 2 processors) and one can find in ANA_FLUX.h: #if defined EW_PERIODIC || defined NS_PERIODIC || defined DISTRIBUTE USE exchange_3d_mod, ONLY : exchange_r3d_tile #endif and furthe...
by thomas.roc
Wed May 27, 2009 3:29 pm
Forum: ROMS Problems
Topic: Compiling error when using ANA_BMFLUX
Replies: 3
Views: 1442

Compiling error when using ANA_BMFLUX

Hi everybody, I'm trying to run in parallel (mpi on 2 intel's cores duo) a 3 D simulation of a simple East-West channel including areas of different roughness height (Z0). To set up these areas I am using ANA_BMFLUX. Unfortunately this message pops up each time I try to compile the code: analytical....
by thomas.roc
Mon Apr 27, 2009 1:24 pm
Forum: ROMS Discussion
Topic: Bodyforce
Replies: 0
Views: 774

Bodyforce

Hi everybody, I'd like to add a mid depth local pressure jump, defined as a function of the velocity, in my 3D simulation. As far as I've understood the best way to do this is use the "bodyforce" option and express directly my pressure jump expression into the code. My questions are: which files sha...
by thomas.roc
Tue Mar 03, 2009 3:13 pm
Forum: ROMS Installation
Topic: Compiling ROMS in parallel on 4 processors (2*Intel Core2)
Replies: 3
Views: 2076

Re: Compiling ROMS in parallel on 4 processors (2*Intel Core2)

Many thanks for the piece of advice, now it's compiling and running correctly. But a new error has popped up, from now I can use the "make clean" command neither recompiling the code. It can be read: " makefile:229: INCLUDING FILE Build/make_macros.mk WHICH CONTAINS APPLICATION-DEPENDENT MAKE DEFINI...
by thomas.roc
Thu Feb 26, 2009 5:05 pm
Forum: ROMS Installation
Topic: Compiling ROMS in parallel on 4 processors (2*Intel Core2)
Replies: 3
Views: 2076

Compiling ROMS in parallel on 4 processors (2*Intel Core2)

Hi everyone, I'm trying to compile ROMS on 4 processors with the command "make -j 4". My exploitation system is Fedora 9 on a 64 bits architecture and I'm using intel fortran compiler and intel MPI library. In the makefile I've only switched on the "USE_MPI" and "USE_LARGE" options and define the co...
by thomas.roc
Wed Feb 04, 2009 8:26 am
Forum: ROMS Discussion
Topic: OBC for barotropic channel flow
Replies: 7
Views: 2261

Re: OBC for barotropic channel flow

My mistake ! My supervisor pointed out the problem in my simulation. I was calculating west_ubar as function of another unknown(zeta_west-zeta_east). Thus non linear behaviours pop up. By using a fixed (zeta_west-zeta_east) and using the proper time step, the simulation reaches a steady solution. Ch...
by thomas.roc
Tue Feb 03, 2009 1:45 pm
Forum: ROMS Discussion
Topic: OBC for barotropic channel flow
Replies: 7
Views: 2261

Re: OBC for barotropic channel flow

Hi, I'm currently facing the same problems. I'm trying to run a barotropic simulation of a simple east-west channel with a homogeneous bathymetry. In this case zeta_west is gently increasing up to a threshold of 0.4m and zeta_east remains the same (thanks to ANA_FSOBC). The boundary conditions are t...
by thomas.roc
Tue Jan 27, 2009 12:01 pm
Forum: ROMS Tools and Techniques
Topic: "READ_PHYPAR - could not find input file: ocean_ini.nc" err
Replies: 4
Views: 2511

"READ_PHYPAR - could not find input file: ocean_ini.nc" err

Hi everybody, I am trying to run a very simple case (a simple channel with a rdrg2 local variation). My simulation is compiling without any trouble but when I am running the executable this message appears: "READ_PHYPAR - could not find input file: ocean_ini.nc" I guess this is due to a consistency ...
by thomas.roc
Wed Jan 07, 2009 10:17 am
Forum: ROMS Discussion
Topic: Additional shear stress
Replies: 3
Views: 1391

Additional shear stress

Hi everybody, I am a new user of ROMS and I bring with me whole bunch of questions. To get started, I am trying to build up a simple case composed of a simple channel where an additional shear stress is imposed on a particular area in order to simulate a power extraction. This additional shear stres...