Hi everyone. I hope you can guide me to further my studies. I’m working on a 2D free surface problem with a sine wave as initial shape for the top boundary. I solve the 2D Navier-Stokes equations using a mixed formulation along with 2 boundary conditions for the free surface (namely a stress conditi…

As the FacetNormal as implied by its name, is defined on each Facet, and not for each degree of freedom, you have to approximate the normal at the degrees of freedom (for instance at corners). For your particular case, the problem is that you are trying to interpolate an ComponentTensor, that is an…

Obtain velocity normal to boundary

charithjeewantha January 6, 2023, 3:08pm 4

Hi @heitorvc , If you have computed the shear stresses for the 2D Navier-Stokes solution, can you please share the code

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Obtain velocity normal to boundary

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