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Hi everybody,

I need to compare two models which have two different mesh.

My question : what is potential error on water level due to two different mesh?

My model is very large with 1 000 000 nodes and the maximum water level is of 4 m.

Thanks in advance,

Have a good day,

Loann

Hi

I'm not sure it will be possible to answer this question easily.

First, you have to take care on the comparison method!

You should also estimate the topography difference between the models.
If both models have dry zone, the topography could play a great role and this could leads to large difference for example if a dry zone in one model is flooded on the other one...
If the model if fully wet, and the topography nearly the same, the potential error should be limited...
A good idea but not necessarily easy to achieve could be to refine both mesh (divide triangles by 4), run the same simulation and compare also the results. In theory, the error should decrease...

regards

Hi,

Thanks for your answer and for enlighten me on the dry zone role.

I'm interested in your proposition and I will try to quantify the potential error by making some simulations with different topography and mesh.

Best Regards,

Loann