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Boundary Type for the rotation Axis in CFX-Pre

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Old   March 20, 2012, 12:00
Smile Boundary Type for the rotation Axis in CFX-Pre
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Zhu Wentao
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What type of boundary should i take for the rotation axis in a 2.5D model.
thank you very much for the help
PS: i use periodic interface for the both sides
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Old   March 20, 2012, 17:17
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Glenn Horrocks
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Assuming by 2.5D by mean an 2D axisymmetric simulation with an out-of-plane swirl component, or a 2D planar simulation with an out-of-plane component - then this can be done using a periodic boundary.
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Old   March 21, 2012, 08:43
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Zhu Wentao
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thank you
but cfx-solve says there is no boundary at the xxx-position(where the rotation axis is). my question is which bounday should i select for the xxx(rotation axis)? symmetrie? free slip wall?
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Old   March 21, 2012, 17:42
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If your geometry is a wedge then you do not need to define any boundary at the rotation axis. CFX does not have linear boundary conditions, only surface boundary conditions. Can you post an image of your geometry?
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