Hello, I am trying to expand step-31, so that the "temperature" equation is a time dependent hyperbolic equation of the form given for "S" in step-21 (two phase flow). Therefore, this is now using Disconinous Galerkin elements.
In order to cope with the adaptive refinement, I have adapted the framework in step-30. However, because I am now using a TrillinosWrapper, I found I could no longer use the DerivativeApproximation::approximate_gradient. Is there some way to get around this? The error is pasted below undefined reference to `void dealii::DerivativeApproximation::approximate_gradient<2, dealii::DoFHandler, dealii::TrilinosWrappers::Vector, 2>(dealii::Mapping<2, 2> const&, dealii::DoFHandler<2, 2> const&, dealii::TrilinosWrappers::Vector const&, dealii::Vector<float>&, unsigned int)' collect2: ld returned 1 exit status Many thanks for your help, Katie Leonard DPhil student in Computational Biology, The University of Oxford. _______________________________________________ dealii mailing list http://poisson.dealii.org/mailman/listinfo/dealii
