Representation of terms
I have a doubt about how to represent two terms in OpenFoam.
One is the transpose of grad(U). From my point of view, I can do it simply by writing:
However, I believe DUT can be written as DUT=fvc::grad(U)().T(); Is there any difference between the two terms.
The second concerns the calculation of the strain rate DR=grad(U) + transpose of grad(U). Are the following forms equivalent of different
- DR=DUT+DUT.T(); where DUT=DU.T() and DU=fvc::grad(U)
- DR=DU+DUT, where DU=fvc::grad(U) and DUT=fvc::grad(U)().T()
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