open TELEMAC-MASCARET The mathematically superior suite of solvers

Hello
How can I determine the optimal mesh?
I am thankful with your guidance

Hi
The optimal mesh is the one which allow you to obtain the result you want.
Try to answer the following question:

• What do you want to simulate
• In which area
• With which precision (in space, time and accuracy)
• At what cost?

This will allow you do determine the mesh area, the mesh density and the time you could spend to reach your objectives

Regards

Hi dear c.coulet
I want to simulate the tide in the bay of KhoreMusa in the Persian Gulf for 2 months. I have prepared several meshes with accurately 10, 20, 30, 40, and 50 meters for this and if I do modeling with each one of these meshes, it takes a long time.
Is there a way to determine the optimal mesh?

Hi
As the mesh are unstructured, you could easily vary the mesh size to manage the "right" mesh to deal with your objectives.
Simulate tide doesn't require a high resolution mesh but you should take care about the section... The variation in time are slow so time step could be quite large (as it depends mainly on velocities)

What I would like you to well understand is: There is no unique "optimal mesh" . Every people which will create a model for such problem in such area will produce a different mesh. If those mesh well represent the topography area, the results will probably be quite similar. Maybe some mesh will needs more time to compute...
The main difference will be the time you will take to build your mesh.
If you have high computation resources you could build a fine mesh and then take less time to well adjust your mesh on the DTM. If you only use a simple desktop computer, this means you should reduce the number of nodes to have results in a reasonable computation time and then you should spend more time on managing mesh density and constraint line.
Regards