<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On 4 Aug 2018, at 23:23, Deep Bandivadekar <<a href="mailto:deep.bandivadekar@strath.ac.uk" class="">deep.bandivadekar@strath.ac.uk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Hello,<br class=""><br class="">Attached is a simple script for a fully structured "flow over cylinder" geometry. If we zoom in to the cylinder wall region, the mesh lines do not seem to coincide with the actual geometry. Why does it happen? How do I avoid this? The circles also look a bit jagged (as if a polygon) rather than smooth.<br class=""></div></div></blockquote><div><br class=""></div><div>The discrepancy is only in the graphical representation: OpenGL cannot render curves - so curves have to be subdivided into straight line segments.</div><div><br class=""></div><div>You can increase the number of sub-segments for the graphical representation with the "<span style="font-family: Menlo; background-color: rgb(255, 255, 255);" class="">Geometry.NumSubEdges"</span> option (in the GUI : Tools->Options->Geometry->Aspect->Curve subdivisions).</div><br class=""><blockquote type="cite" class=""><div class=""><div class=""><br class="">I did have a smooth nice mesh earlier but I reduced the overall dimensions a bit and this happened and now it won't go back to the same even if I use the original script. Meshed geometry with well conforming edges: <a href="https://drive.google.com/open?id=1tMSst0q8pRpWlJGP6KAj3pMzlnix9QR-" class="">https://drive.google.com/open?id=1tMSst0q8pRpWlJGP6KAj3pMzlnix9QR-</a> (.msh file 57mb)<br class=""><br class="">Can you please tell me where is the problem?<br class=""><br class="">Thanks<br class=""><span id="cid:B90C2261-A904-4853-BC70-6CD67F902252@home"><cylinder0.geo></span>_______________________________________________<br class="">gmsh mailing list<br class=""><a href="mailto:gmsh@onelab.info" class="">gmsh@onelab.info</a><br class="">http://onelab.info/mailman/listinfo/gmsh<br class=""></div></div></blockquote></div><br class=""><div class="">
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