<!--espresso editor content start--><div id="espresso_editor_view" style="font-family:굴림;font-size:10pt;"><P>Thank you for your previous answer about zero jacobian.</P>
<P>Now, I got another problem;;</P>
<P>I made 2 *.geo files.</P>
<P> </P>
<P>file 1 : 3d_test_2.geo</P>
<P>file 2 : takeda_model3_3d.geo</P>
<P> </P>
<P>First one can accept advanced mesh options "Optimize quality of tetrahedra", "Optimize quality of tetrahedra with Netgen"</P>
<P>But second one generates error message that "run time error"</P>
<P>You can know if you run the file 2.</P>
<P> </P>
<P>My question is, why this error message occurred? Although file 2 is somewhat complicated one compare with file 1, basic structure and order is same as file 1. So, I couldn't understand why this message was occurred.</P>
<P>And second question is what is the difference between option "Optimize quality of tetrahedra" and option "Optimize quality of tetrahedra with Netgen"?</P>
<P> </P>
<P>I attached both file 1 and file 2.</P>
<P> </P>
<P>Thank you for reading.</P>
<P> </P>
<P>Seoul National University, Korea</P>
<P>Department of Nuclear Engineering</P>
<P>RPL ( Reactor Physical Laboratory )</P>
<P>Eun Hyun Ryu</P>
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