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Feat: Adding optional computation/output of cell-centered velocities#3974

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jafranc wants to merge 8 commits intodevelopfrom
jafranc/feat/velocities
Draft

Feat: Adding optional computation/output of cell-centered velocities#3974
jafranc wants to merge 8 commits intodevelopfrom
jafranc/feat/velocities

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@jafranc jafranc commented Feb 18, 2026

This PR is adding cell-center velocities as an optional output. The cell center vectorial velocity is the result of:

\mathbf{u_p} \cdot \mathbf{n_f} = u_f

  • Solve the problem for 2D and 3D elements
  • Implement proper treatment of 2D elements
  • Design a unit test for all Face-determined type of elements.
  • Add integrated test using it.

2D polygons and 3D polyhedrons are for now left out of this computation as they can have arbitrarly number of faces.

It will be later used by implementation of dispersion PR.

@jafranc jafranc self-assigned this Feb 18, 2026
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