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<p class="MsoNormal">Hi Gmsh users,<o:p></o:p></p>
<p class="MsoNormal">The .geo file below produces a transfinite mesh of prism elements.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Mesh.Smoothing =1; //need this < 2 so get uniform bias in BL across the surfaces<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Blays=3;<o:p></o:p></p>
<p class="MsoNormal">w=4;<o:p></o:p></p>
<p class="MsoNormal">l=6;<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Point(1) = {0, 0, 0};<o:p></o:p></p>
<p class="MsoNormal">Point(2) = {1, 0, 0};<o:p></o:p></p>
<p class="MsoNormal">Point(3) = {1, 1, 0};<o:p></o:p></p>
<p class="MsoNormal">Point(4) = {0, 2, 0};<o:p></o:p></p>
<p class="MsoNormal">Point(5) = {0.2, 0.2, 0.25};<o:p></o:p></p>
<p class="MsoNormal">Point(6) = {0.8, 0.2, 0.25};<o:p></o:p></p>
<p class="MsoNormal">Point(7) = {0.8, 0.8, 0.25};<o:p></o:p></p>
<p class="MsoNormal">Point(8) = {0.2, 1.5, 0.25};<o:p></o:p></p>
<p class="MsoNormal">Line(1) = {1, 2};<o:p></o:p></p>
<p class="MsoNormal">Line(2) = {2, 3};<o:p></o:p></p>
<p class="MsoNormal">Line(3) = {3, 4};<o:p></o:p></p>
<p class="MsoNormal">Line(4) = {4, 1};<o:p></o:p></p>
<p class="MsoNormal">Line(5) = {5, 6};<o:p></o:p></p>
<p class="MsoNormal">Line(6) = {6, 7};<o:p></o:p></p>
<p class="MsoNormal">Line(7) = {7, 8};<o:p></o:p></p>
<p class="MsoNormal">Line(8) = {8, 5};<o:p></o:p></p>
<p class="MsoNormal">Line(9) = {2, 6};<o:p></o:p></p>
<p class="MsoNormal">Line(10) = {3, 7};<o:p></o:p></p>
<p class="MsoNormal">Line(11) = {4, 8};<o:p></o:p></p>
<p class="MsoNormal">Line(12) = {1, 5};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(13) = {5, 6, 7, 8};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(1) = {13};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(15) = {3, 11, -7, -10};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(2) = {15};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(17) = {6, -10, -2, 9};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(3) = {17};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(19) = {5, -9, -1, 12};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(4) = {19};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(21) = {4, 1, 2, 3};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(6) = {21};<o:p></o:p></p>
<p class="MsoNormal">Line Loop(23) = {8, -12, -4, 11};<o:p></o:p></p>
<p class="MsoNormal">Plane Surface(5) = {23};<o:p></o:p></p>
<p class="MsoNormal">Surface Loop(25) = {1, 2, 3, 4, 5, 6};<o:p></o:p></p>
<p class="MsoNormal">Volume(1) = {25};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Line {10, 11, 12, 9} = Blays+1 Using Progression 1.3;<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {2};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {3};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {4};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {5};<o:p></o:p></p>
<p class="MsoNormal">Recombine Surface {2, 3, 4, 5};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Line {5, 7, 3, 1} = w+1 Using Progression 1;<o:p></o:p></p>
<p class="MsoNormal">Transfinite Line {4, 2, 6, 8} = l+1 Using Progression 1;<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {1};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Surface {6};<o:p></o:p></p>
<p class="MsoNormal">Transfinite Volume {1};<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Picture 1) It produces a surface mesh on surface 1 like so<o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"><img width="462" height="227" id="Picture_x0020_2" src="cid:image006.png@01D1FD35.30BDBC90"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Picture 2) If I comment out Transfinite Surface {1}; and Transfinite Surface {6}; in the geo file I get a surface mesh on surface 1 like so<o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-GB"><img width="422" height="227" id="Picture_x0020_3" src="cid:image007.png@01D1FD35.30BDBC90"></span><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Now this surface mesh has better statistics than the transfinite one, but as expected the 3D meshing fails.<o:p></o:p></p>
<p class="MsoNormal">Is there a way to copy with morphing, the mesh on surface 1 to surface 6 and produce a 3D mesh of surface 1 swept to surface 6 resulting in an all prism 3D mesh?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks in advance.<o:p></o:p></p>
<p class="MsoNormal">Mark<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB">Mark Smith</span></b><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB"><o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy;mso-fareast-language:EN-GB">Senior Engineer (Modelling)<o:p></o:p></span></b></p>
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