Velocity contours are showing zero velocity for periodic geometry?

    • Mohamad Yassine

      I am trying to model a 2D tubes bundles (see figure) by modelling a periodic portion of the geometry. I added the symmetry/periodic boundary conditions and I define the pressure gradient (1e-5 Pa) to drive the flow. The resulting velocity contours I am getting are zero, but when i switch off "node" values i get banded velocity contours (smooth contours option is greyed out). Am i doing something wrong?

    • Rob
      Ansys Employee

      How does the convergence look?  1e-5 Pa is tiny, so the flow velocity may be near enough zero. 

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