code_saturne User's Forum

Hello,

I could like to compute scalar Laplacian, so a divergence of a gradient of a scalar field (div(grad(X))).
I found a way to compute the gradient with field_gradient_scalar subroutine.
But I can't found the way to compute a divergence or directly a laplacian.
Is there someone who can give me tips about it?

Best regards
Camille Barnaud.

Hello,

In the sources, in src/alge, you will find some functions that may help in cs_divergence.c/h.

You may see how it is used for example in src/turb/cs_les_balance.c. (which also includes a _les_balance_laplacian function).

Hoping it helps. I am not an expert in those parts of the code (I simply have an idea of what to search for using "grep").

Best regards,

Yvan

Hello,
Thank you for your answer.
I'm sorry but the file src/turb/cs_les_balance.c doesn't exist on my version (CS 6.0.0), so neither the laplacian function.
I used the grep tip and I got the file cs_divergence.c/h too but the use of theses functions didn't fit my needs (if I trust Doxygen's documentation).

Thank you for trying to help me, I will find another way to compute my equation.

Best regards,
Camille Barnaud.