[Paraview] Calculation of eigenvalues of velocity tensors

[Janusz Michalik]

Hello all,

Has anyone tried to compute the eigenvalues of tensors?

In particular, I am interested in plotting the isosurface of the second eigenvalue of S^2+Omega^2 where S and Omega are the symmetric and antisymetric parts of the velocity gradient tensor \nabla U.

Thank you in advance.

-Janusz
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