Hey all,sorry in advance for bothering you with probably a stupid question but I am just confused by the following problem:
I performed a simulation using a mesh with infinite elements and all is fine. then I want to do some post-processing (getting the solution on several single points in the computational domain) but all of a sudden I get an error from the compute_map() function saying "negative Jacobian". First thing is that the simulation worked fine without errors so the mesh should be ok. Furthermore, it makes a difference if I read the simulation mesh for the post-processing (that I wrote during the simulation after building the infinite elements) or if I read just the fe-mesh and reconstruct the final mesh by building the IFE in the post-processing code (the result is the same mesh). The error then pops up for different elements. When I dump on the screen all the values that are computed for the jacobian in "compute_map()" I always get "nan" and all of a sudden a number other than "nan" is computed which is negative and causes the error. But like I said, using the "read in" mesh a certain element causes a "nan" (and hence, no error message) and the same element causes a negative value and the error when the IFE are build in the post-processing code. This all makes no sense to me. (especially why in general a Jacobian=nan is computed).
I hope this was not too confusing and stupid. Thanks in advance for your help, Jan
begin:vcard fn:Jan Biermann n:Biermann;Jan org:;Institute for Modelling and Computation adr;quoted-printable;dom:;;Denickestra=C3=9Fe 17;Hamburg;;21073 email;internet:[EMAIL PROTECTED] title:Dipl.-Ing. tel;work:+4940428784480 url:http://www.mub.tu-harburg.de version:2.1 end:vcard
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