<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">Dear all,<div><br></div><div><br></div><div>I would like to generate a block structured hexaeder-only-3D-mesh for a geometry consisting of several conical frustums. Something like this:<br><div><br></div><div><br></div><div> __________ </div><div> \ /</div><div> | |<br> \ / <br> | | </div><div>C_| | _ C <br> \ / ^ extrude B->C<br>B _ \____/ _ B _|_</div><div>A _ |___| _ A</div><div><br></div><div><br></div><div>Section A-A has a non-circular cross-section, and section B-B and all others above have circular cross-section. I successfully created A-A and the circular cross-section B-B. Both consist of several surfaces/blocks (see attached picture). In my *.geo script I try to work with variables. There I collect the IDs of all surfaces forming the cross-section B-B (= the bottom of the first conical frustum) in an array (=cross_section_BB_surfaces[]). Nevertheless, when I try to Extrude+Dilate these surfaces in order to build the first conical frustum (=B-B -> C-C), during meshing I get several errors about „Could not find extruded vertex …“ . Extrusion-only of B-B to C-C (without Dilate) works fine, but this would just give me a cylinder outline and it is not what I want.</div><div>Since I need a block structured mesh and also because A-A has a non-circular cross-section (see bottom plane of geometry in attached picture) I would really like to make use of the extrude command for creation of C-C and the other frustum above.</div><div><br></div><div>(1) Is there a way to make this work (without having to create all frustums including their blocked structure by hand) ?</div><div><br></div><div>(2) If not, can anybody think of a solution for how to script this in an efficient and handable way ?</div><div><br></div><div><br></div><div>Thanks a lot.</div><div><br></div><div>Cheers Flo</div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><br></div><div><img height="710" width="1262" apple-width="yes" apple-height="yes" apple-inline="yes" id="8A629080-D4A4-4FE1-B8E1-162C296D876C" src="cid:7FBA99E8-BE9D-4587-BA70-A20F989E58BB"></div></div><br><br><div>
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