The way you've written it is correct. There's no way to make such a term implicit, so just write it as it appears.
> On Jul 13, 2016, at 12:26 PM, Gopalakrishnan, Krishnakumar > <krishnaku...@imperial.ac.uk> wrote: > > <image001.gif> > Hello, > > I have an equation of the form: > > nabla.(D grad (phi)) = exp(a*phi – K) - exp(-(b*phi – K)) > > The diffusion coefficient is simply ‘D’. But how do I cast the non-linear > source term? i.e. what is the syntax to use in the code? In the examples, I > did not notice any non-linear source term. > > ‘a’ and ‘b’ are just scalar coefficients of the CellVariable ‘phi’ in the > source term. ‘K’ is a CellVariable of another PDE, which couples this PDE. > > > Is it enough to simply write the source term as, > > ImplicitSourceTerm(coeff = numerix.exp(a*phi – K) – numerix.exp(-(b*phi – K)) > > > Best Regards > > Krishna > _______________________________________________ > fipy mailing list > fipy@nist.gov > http://www.ctcms.nist.gov/fipy > [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ] _______________________________________________ fipy mailing list fipy@nist.gov http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]
