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Hi,

have there been any changes to the format of spectrum files output by TOMAWAC at V6P0? We seem to be seeing differences between output in the spectrum file and the integrated parameters file. Also, and perhaps related, the position of the spectrum points is not as specified in the cas file.

Thanks for you help,

Doug

Hello Doug,

In principle, no changes were made regarding these aspects (output of results) between versions V5P9 and V6P0 of TOMAWAC.
Can you send us more details about the observed problem (unreadable files ? uncorrect data in the file ?), and if possible the input files you use for the simulation (parameter file, geometry file and boundary conditions file at least) ?
Please send this data to Elodie Gagnaire-Renou (This email address is being protected from spambots. You need JavaScript enabled to view it.) and me (This email address is being protected from spambots. You need JavaScript enabled to view it.).

Regards,

Michel

Hi Michel,

I am working with Doug on this project.

I initially tried to run V6P0 with 33 spectral output points, but found out that some of the points that were output were not at the requested location (the locations specified are on mesh nodes). Also, the directions as given in the spectra are not consistent with the dominant directions as output in the 2D selafin file.

I am now running Tomawac V5P8 with 19 spectral output points, and the results look more sensible. I first need to get agreement from the project manager before I can send you any data. In the meantime, we also noticed that there was a possibly related issue with one of the test cases (frot_T_d5-f0.1-h1). The spectral output points are all found to be outside the mesh when running with version V6P0, but not with V5P8.

The main modification we know of between V5P8 and V6P0 is the possibility to output soectra at more than 19 locations. The problem we found may be related?

Many thanks

Laure

Hi Laure,

I have been looking at the test case "bottom_friction" (frot_T_d5-f0.1-h1) with version V6P0 of Tomawac, as you suggested.
It appears (I do not know why to be honnest...) that the coordinates of the points where output of spectra is requested are incorrect: they are indeed all outside the area covered by the mesh. So it is normal that you have the message that these points are outside the mesh when looking at the .spe result file.

When I correct these coordinates so that they are in the computational mesh (see attached modified parameter file "frot_T_V6P0.cas") the simulation runs correctly with 6 spectra in the .spe result file. The nodes where these spectra are selected seem correct to me.

I need to try with a larger number of output points, but I think that the problem with the "bottom_friction" validation case is not related to the one you met on your particular application. So I would need to have access to the input files of this case to progress in the understanding of the problem.

I am however curious to see how the "bottom_friction" test case can run with the version V5P8 of Tomawac. Is it the same parameter file you used as for version V6P0 ? Can you send me the parameter file you use for the run of this case with Tomawac V5P8 ?

Regards,

Michel Benoit (This email address is being protected from spambots. You need JavaScript enabled to view it.)