I tried to start with a simpler system, and it seems like I get the same problem if I split up the equations at all.
Anyway, I started with a 1 equation system http://pastebin.com/X5tT1RUB and would like to see the phase separation, but after time ~2000 (see the video https://www.dropbox.com/s/nocwmh8x1f5b6rw/1_order_parameter.mp4), the error increases a lot. I'd like to see what happens after more iterations, so is there a way to keep the error small? On Mon, Dec 30, 2013 at 10:50 AM, Daniel Wheeler <daniel.wheel...@gmail.com>wrote: > On Sun, Dec 29, 2013 at 6:28 PM, Jane Hung <jyh...@mit.edu> wrote: > > I'm also getting RuntimeError. To get over this, is there a way to > represent > > the system a different way or does the system itself too complicated? > > You can also represent the system in an entirely uncoupled manner. > That would reduce the size of memory and provide an alternative > result. If the time step is small enough the uncoupled and coupled > formulations should be the same. > > > What do you mean by know the answer? > > I just meant some analytical result or behavior such as bounded values > or conserved quantities. A demonstrable logical inconsistency makes > debugging easier. > > > I have an idea of what the time > > evolution of the variables should look like in the 2D case, but I don't > have > > an analytical solution. > > That helps. Could you hold some of the variables fixed (by changing > coefficient values or time steps for some equations) and then evolve > only one or two of the equations for example. > > -- > Daniel Wheeler > _______________________________________________ > fipy mailing list > fipy@nist.gov > http://www.ctcms.nist.gov/fipy > [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ] > -- Jane Hung Graduate Student | MIT Department of Chemical Engineering Hatton Lab 66-325 | Doyle Lab E18-509 jyh...@mit.edu | 415.952.6325
_______________________________________________ fipy mailing list fipy@nist.gov http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]
