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<body>Dear Shim,<br><br>please always reply to the list...<br><br>If you could upload the file somewhere and send a link, would be perfect. Sending large files over the list is not the preferred way.<br><br>Best Christian<br><br><div class="gmail_quote">Am 27. September 2018 17:50:44 MESZ schrieb "Shim, Miseon" <shimm@umkc.edu>:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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<p>Thank you Christian,</p>
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<div>>> If you construct/read a mesh, you can assign a boundary parametrization (the boundary segment) to each foundary face of the mesh. In your case UG reports, that you have roughly 8 times as many boundary segments as you have faces. This sound pretty much
as if your mesh is already invalid.</div>
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<div>- Does your sentence mean that I should generate a new mesh model for UG computing?</div>
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<div><span style="font-size:10pt">The mesh file is </span><span style="font-size:10pt">generated by tetgen program, and I used this file without modify as an input file for computing. </span><br>
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<p><span style="font-size:10pt">Of course I'm able to </span><span style="font-size:10pt">provide mesh file to you. Would </span><span style="font-size:10pt">I send the mesh file as attachment via email</span><span style="font-size:10pt">? Or is there other
way to send the mesh file to you?</span></p>
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<p>Thanks again for your help.</p>
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<p>Best,</p>
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<p><span style="font-size:10pt">SHIM, </span><span style="font-size:10pt">MISEON</span></p>
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<div><span style="font-size:10pt">*</span><br>
<span style="font-size:10pt">Post-doctoral fellow</span><br>
<span style="font-size:10pt">Department of Psychiatry</span><br>
<span style="font-size:10pt">University of Missouri-Kansas City</span><span style="font-size:10pt"><br>
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<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>보낸 사람:</b> Christian Engwer <christian.engwer@uni-muenster.de><br>
<b>보낸 날짜:</b> 2018년 9월 25일 화요일 오후 5:13:52<br>
<b>받는 사람:</b> Shim, Miseon<br>
<b>참조:</b> dune@lists.dune-project.org<br>
<b>제목:</b> Re: [Dune] A problem in dune-grid</font>
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<div class="PlainText">Hi Shim,<br>
<br>
welcome to dune :-)<br>
<br>
On Tue, Sep 25, 2018 at 08:50:56PM +0000, Shim, Miseon wrote:<br>
> Dear All,<br>
> <br>
> I hope you are doing well!<br>
> <br>
> <br>
> A problem was occurred when I used dune-grid via duneuro-py. The error message is as follows:<br>
> <br>
> <br>
> RuntimeError: GridError [createGrid:/Dune/dune-grid/dune/grid/uggrid/uggridfactory.cc:275]: You have supplied 868420 parametrized boundary segments, but the coarse grid has only 119990 boundary faces!<br>
> <br>
> What is the meaning of this error?<br>
<br>
If you construct/read a mesh, you can assign a boundary<br>
parametrization (the boundary segment) to each foundary face of the<br>
mesh. In your case UG reports, that you have roughly 8 times as many<br>
boundary segments as you have faces. This sound pretty much as if your<br>
mesh is already invalid.<br>
<br>
- Are you reading a gmsh file? Or how are you constructing the mesh?<br>
- Can you provide the mesh file (or a minimal example)?<br>
<br>
> Is there a limitation for the number of boundary segments?<br>
<br>
If I remember UGGrid correctly, there is a limitation, but this is not<br>
your problem here and I doubt that you will hit this limit.<br>
<br>
> Should I reduce the number of segments?<br>
<br>
Does this mean that you manually specify the segments?<br>
<br>
Best<br>
Christian<br>
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