I want to calculate d2U_i/(dx_j.dx_j) (j=1,2,3, i.e. summation convention). When I use:
The code gives me an error. Does Anyone has an idea about its implementation?
Thanks in advance
Sorrr I meant this:
What is the error message you got? Do you use the right field type and/or should you use fvm instead of fvc?
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