Hi there, First of all, thanks for putting this out there. I'm new to fipy, but it seems like it is exactly the tool I need. I'm trying to couple two Cahn-Hilliard type equations,
http://folk.uio.no/jonaerik/files/ch2_simple.py The equations are of course not coupled, but it serves as a minimal example. The code crashes, and I get this Traceback: http://folk.uio.no/jonaerik/files/errormsg.txt When I replace 'eqn' with either 'eq1' or 'eq2' in the sweep method, everything works fine. And, when I replace the right hand side of both equations with a simple diffusion term (DiffusionTerm(var=A (or B), coeff=1)), the code runs fine. Is this expected behaviour? Or is there anything I can do to fix my problem? Also, a completely unrelated question: Is the SimpleLUSolver really iterative? It says in the documentation that it is a "wrapper for PySparse superlu.factorize()", but this documentation (http://pysparse.sourceforge.net/fact.html) lists it under direct solvers (isn't LU factorisation just a way to invert the matrix and solve the equation directly anyways?). What confuses me is that SimpleLUSolver takes tolerance and iterations arguments. How does it work? regards, Jon Eriksen _______________________________________________ fipy mailing list fipy@nist.gov http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]
