add support for global meshes for TELEMAC system

Global meshes have the particularity of being closed meshes, with triangles crossing over the 180/-180 dateline. To be able to add support for global meshes throughout the TELEMAC system, certain routines need revision/adaptation.

For example, here are the boundaries detected by the modified pretel/extract_contour.py routine:

As requested by @boris.basic in !176 (closed), find below the following steps for implementing support for global meshes in the TELEMAC system.

• pre-processing (PYTHON/PRETEL) for boundaries.
• adapt routines for TOMAWAC
• adapt routines for TELEMAC3D
• (eventually) adapt routines for other openTELEMAC modules or features (GAIA, WAQTEL, GOTM, AED and coupling).
• add test case (see comments)

added lang:fortran lang:python type:enhancement type:feature labels

assigned to @saillour.thomas

mentioned in merge request !180 (closed)

marked the checklist item pre-processing (PYTHON/PRETEL) for boundaries. as completed

marked the checklist item parallelization for global meshes (PARTEL). as completed

marked the checklist item adapt routines for TELEMAC2D as completed

The first step should be addressed in !180 (closed)

changed the description

mentioned in merge request !202 (merged)

Reviews from @alexander.breugem and @chi-tuan.pham in !202 (merged) and !203 (merged) justify the need for an easy, light and robust test case for globals models running on CI.

The test case would be integrated in the examples (possibly in TELEMAC3D using TOMAWAC coupling, if too complicated only in TELEMAC2D).

I have started something with the pimesh from FESOM:

(more about FESOM meshes)

And will first implement in our pipelines for our uses in seareport_models.

I am adding this task to the list in description.

changed the description

Hi Thomas,

Good idea to have a test case for a global model. I think ideally, we should have a case for telemac2d and for telemac2d (which could use the same mesh and cli file, just a different .cas file and userFortran). Ideally, this would be coupled to TOMAWAC.

Kr

Alexander