Q. I am getting some strange differences between slice and sample plane behaviour, particularly on points 'outside' the domain, in Post in CFX-10.
A. There is now an Interpolation Tolerance in Post that means sample points considered just outside the flow domain are snapped to the domain boundary (and therefore assume the boundary value). The tolerance defaults to 5% of the domain extent. If your domain is large compared to the geometry of interest that intersects your slice plane, the sample points might be snapped to a boundary (eg. parallel to the plane) when they shouldnt be. Hence they are displayed with non-zero values instead of being 'undefined'.
You can change the tolerance (or turn it off and revert to 5.7 behaviour by setting it to 0) in Edit > Options > Post.
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Q. I am getting some strange differences between slice and sample plane behaviour, particularly on points 'outside' the domain, in Post in CFX-10. A. There is now an Interpolation Tolerance in Post that means sample points considered just outside the flow domain are snapped to the domain boundary (and therefore assume the boundary value). The tolerance defaults to 5% of the domain extent. If your domain is large compared to the geometry of interest that intersects your slice plane, the sample points might be snapped to a boundary (eg. parallel to the plane) when they shouldnt be. Hence they are displayed with non-zero values instead of being 'undefined'. You can change the tolerance (or turn it off and revert to 5.7 behaviour by setting it to 0) in Edit > Options > Post. |
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