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<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Hello, </span></p>
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<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">i have a 3D Model as a stp file and i want to use a boundary layer on the inner cylinder and the blade (attached photo). </span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">i don´t know why the boundary layer doesn´t work. For your information, the surface of the inner cylinder, where the blade is fixed, has a hole in it. Could this be the problem? As a second step (when this boundary layer works), i want to put the boundary layer around the inner cylinder and also around the blade. But first i want to get the boundary layer working. </span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Can you please help me find the mistake? here is my .geo text. (FYI: The modellength is 32000mm, so i took big mesh sizes...)</span></p>
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<p style="margin-bottom: 0.5cm"><span style="font-family:verdana,geneva,sans-serif;">Mesh.CharacteristicLengthFactor = 1.;</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Geometry.OCCSewFaces = 1.;<br/>
//Geometry.OCCConnectFaces = 1.;<br/>
Geometry.Tolerance = 0.02;</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Merge "2904blade.stp";</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Coherence;</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Surface Loop(19) = {5, 8, 7, 1, 9, 2, 3, 6, 4};<br/>
Volume(20) = {19};</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Characteristic Length {9, 10, 7, 8} = 200.;<br/>
Characteristic Length {5, 6, 11, 12} = 400.;</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Field[1] = BoundaryLayer;<br/>
Field[1].EdgesList = {6,14,15,16};<br/>
//Field[1].NodesList = {5,6,11,12};<br/>
Field[1].FanNodesList = {5,6,11,12};<br/>
//Field[1].FacesList = {1};<br/>
Field[1].hfar = 150.;<br/>
Field[1].hwall_n = 50.;<br/>
Field[1].hwall_t = 80.;<br/>
Field[1].thickness = 200.;<br/>
//Field[1].Quads = 0;<br/>
Field[1].ratio = 1;</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">BoundaryLayer Field = 1;</span></p>
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<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Thank you for your help!!</span></p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Best regards, </span></p>
<p style="margin-bottom: 0cm"> </p>
<p style="margin-bottom: 0cm"><span style="font-family:verdana,geneva,sans-serif;">Maximilian Wörle</span></p>
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