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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">Dear all, </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">Can someone explain me how to use gmesh to coarsen a closed surface mesh? I attach a simple geometry as test data.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">I tried in vain in the GUI to put ‘options > mesh > element size’ to a value bigger than one.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">The data I want to apply it to is a heart geometry which has originally 10^6 vertices and 5 10^5 faces, which should be reduced to approx. 500 faces.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">Thank you very much for your assistance.</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB"> </span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">Hans Dierckx</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;color:black;mso-fareast-language:EN-GB">Leuven University</span><span style="color:black;mso-fareast-language:EN-GB"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;mso-fareast-language:EN-GB"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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