<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 12 Apr 2022, at 5:20 PM, Ce Qin <<a href="mailto:qince168@gmail.com" class="">qince168@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">I am sorry for the unclear description.<div class=""><br class=""></div><div class="">By hierarchical, I mean that each cell in the coarse mesh marked for refinement is subdivided into several small cells.</div></div></div></blockquote><div><br class=""></div><div>[Par]Mmg does not do that. They generate unstructured meshes without a particular hierarchy between the input and output meshes.</div><div><br class=""></div><div>Thanks,</div><div>Pierre</div><br class=""><blockquote type="cite" class=""><div class=""><div dir="ltr" class=""><div class="">For example, the mesh refined by the SBR method is hierarchical.</div><div class=""><br class=""></div><div class="">Best regards,</div><div class="">Ce</div><div class=""><br class=""></div><div class=""><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Matthew Knepley <<a href="mailto:knepley@gmail.com" class="">knepley@gmail.com</a>> 于2022年4月12日周二 18:47写道：<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div dir="ltr" class="">On Tue, Apr 12, 2022 at 2:10 AM Ce Qin <<a href="mailto:qince168@gmail.com" target="_blank" class="">qince168@gmail.com</a>> wrote:<br class=""></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class="">Thanks for your reply, Matthew.<div class=""><br class=""></div><div class="">One more question, I want to get a hierarchical mesh after mesh adaptation, so does the adaptation method implemented in ParMMG support this feature?</div></div></blockquote><div class=""><br class=""></div><div class="">What exactly does that mean?</div><div class=""><br class=""></div><div class=""> Thanks,</div><div class=""><br class=""></div><div class=""> Matt</div><div class=""> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div class="">Best regards,</div><div class="">Ce</div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Matthew Knepley <<a href="mailto:knepley@gmail.com" target="_blank" class="">knepley@gmail.com</a>> 于2022年4月11日周一 21:17写道：<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div dir="ltr" class="">On Fri, Apr 1, 2022 at 10:14 AM Ce Qin <<a href="mailto:qince168@gmail.com" target="_blank" class="">qince168@gmail.com</a>> wrote:<br class=""></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div dir="ltr" class="">Dear all,<div class=""><br class=""></div><div class="">I want to implement the adaptive finite element method using the DMPlex interface. So I would like to know whether DMPlex supports local (also hierarchical) refinements of tetrahedron elements. I found that there is an adaptation method called SBR, but it seems that it only supports triangle elements. </div></div></div></blockquote><div class=""><br class=""></div><div class="">Sorry this took me a while.</div><div class=""><br class=""></div><div class="">You are right, I have not implemented the 3D version yet. It is straightforward, but in the paper there are 96 cases. I would like</div><div class="">to automatically generate that, but I need to figure out how that would go. Right now all the adaptation requests have been for</div><div class="">2D, or used ParMMG which works in 3D for PETSc right now.</div><div class=""><br class=""></div><div class=""> Thanks,</div><div class=""><br class=""></div><div class=""> Matt</div><div class=""> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr" class=""><div dir="ltr" class=""><div class="">Best regards,</div><div class="">Ce</div></div></div>
</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">-- Norbert Wiener</div><div class=""><br class=""></div><div class=""><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank" class="">https://www.cse.buffalo.edu/~knepley/</a><br class=""></div></div></div></div></div></div></div></div>
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</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class="">What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br class="">-- Norbert Wiener</div><div class=""><br class=""></div><div class=""><a href="http://www.cse.buffalo.edu/~knepley/" target="_blank" class="">https://www.cse.buffalo.edu/~knepley/</a><br class=""></div></div></div></div></div></div></div></div>
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