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-   -   [ICEM] Rotational periodicy setup (https://www.cfd-online.com/Forums/ansys-meshing/87841-rotational-periodicy-setup.html)

 Procyon April 30, 2011 07:55

Rotational periodicy setup

Heyho everyone,

this might be a stupid question but I have no success in setting up a preiodicy. Even a very simple test case does not work:

1. I created an empty project
2. Geometry, create points:
for the rotational axis (X)
0, 0, 0
200, 0, 0

for the first rotational periodicy surface (from axis to Y)
0, 100, 0
200, 100, 0

for the second rotational periodicy surface (from axis to Z)
0, 0, 100
200, 0, 100
3. Geometry, create curves: one axis curve, two parallel to the axis curve (moved to Y and Z, respectively), two arcs, 4 from axis start/end to the parallel curves
4. Geometry, create surfaces: one inlet, one outlet, one wall, two periodic surfaces (just a quarter of a pipe ...)
5. Build diagnostic topology with inherit part turned on, method: all parts
Output:
24 vertices merged, merge tol = 0.100000
0 curves concatenated
0 curves merged
0 points created intersecting curves
0 edges concatenated
0 surfaces merged
6. define rotational periodicity:
user defined by angle
base: 0 0 0
axis: 1 0 0 ( in x direction)
angle: 90 (unit is degrees?)
7. compute surface mesh with autosizing
8. edit mesh / check mesh
only periodic problems checked
elements to check: all
Output: There is no periodicity defined in the mesh
What have I done wrong? The same happens if I create a material point in the volume.

Please don't tell me to "read the help/do the tutorials". I read the help, and I will read it again if you point me to the right help page. I have only found two ICEM tutorials in the Ansys customer center, but they don't address my problems.

In this thread: http://www.cfd-online.com/Forums/mai...city-icem.html I read that the periodic faces have to be in the same part, but this is true for my test case.

Bye,
Procyon

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