How to calculate Laplacian of a function?


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20 days ago by
During post process, I have to calculate the Laplacian of solution, which is a scalar and denoted as $u$. I found no direct method to do that.

I am also wondering what the result would be when I use Lagrange P1 or P2 elements.
Community: FEniCS Project

1 Answer


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19 days ago by
I just found this works.
div(grad(u))​
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