Calculating Average Normal Velocity to Iso-Surface

Problem: How do I calculate the average normal fluid velocity (or any vector variable) going through an iso-surface? Details: Or stated another way, “I am trying to use a vector dot product with unit normal integration to get the average normal velocity through an extracted iso-surface.”  This question originally relates to this scenario, but it can be used for calculating the average flux though a surface for various cases. Solution: […]

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How do I create radial and theta slices?

Radial slices Compute the equation: {R} = sqrt(X**2 + Y**2) in the Data -> Alter -> Specify Equations dialog.  Turn on iso-surfaces in the Plot Sidebar. Then display an iso-surface of constant R. Theta slices Compute the equation: {Theta} = atan2(X,Y) in the Data -> Alter -> Specify Equations dialog. Then display an iso-surface of constant Theta.  Note that due to a singularity at the origin you may get some strange shapes […]

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