Gas at a no slip wall have non-zero velocity?

Hi Jeff,

In the example above, if all u velocities are stored in the center of the east face, then there should be only 16 data points (the red dots). However, when I used vtk.vtkCellDataToPointData(), it gave me 25 data points of u, meaning each lattice point has a data attached to it. That said, if I do any simple translation, the data will exceed the physical domain of the simulation. I am wondering if I used the wrong data converter?

Thanks,
Jack