6.4 Problems FAQ

1. Q: How can I solve nonlinear problems?

   A: See the files src/applications/cdr/bratu.lisp and src/applications/navier-stokes/driven-cavity.lisp for examples how to solve nonlinear pdes by a Newton iteration and multigrid.

2. Q: How can I solve time-dependent problems?

   A: This is work in progress. At the moment, you have still to set up your time-stepping scheme yourself by assembling a delta-t dependent term in matrix and right-hand side.

3. Can Femlisp handle coupled problems?

   A: Yes. This is done by marking parts of a domain and specifying problems depending on this mark.

4. Q: Can Femlisp solve my specific problem?

   A: Please ask on the femlisp-user mailing list for help. You will have to subscribe for doing so (spam protection).