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How to choose surface of just one material?

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Old   April 26, 2017, 01:41
Default How to choose surface of just one material?
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Hello everyone,

I have a 3D model including a rectangular cross-section (pipe flowed through by water).

When I choose this surface by GUI using iso-clip, I have the whole cross-section (solid and fluid) but I only want to select the nodes of the solid.

How can I select that? Do I need to use UDF?

Best regards
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