On Thu, Jul 14, 2011 at 10:44 AM, Julien Derr <julien.d...@gmail.com> wrote: > reoups.. actually, if you could mind ... I tried this implementation, > > return self.distanceVar._cellInterfaceFlag * 1e+20 * (self.ionvar() - > 0.1) > > where 0.1 would be the value I want at the boundary... and ionvar is > supposed to represent the diffusing field I guess ... > > but get the error : > > AttributeError: '_CUSTOMMetalIonSourceVariable' object has no attribute > 'ionvar'
Is ionvar defined anywhere as an attribute of '_CUSTOMMetalIonSourceVariable'? Regardless of the error, I don't believe your implementation will achieve what you want as you aren't using an ImplicitSourceTerm. You need both an implicit and explicit source term to fix the value of a cells in a given location. Something like this >>> x = mesh.cellCenters ## mesh.getCellCenters() for older fipy >>> myRegularEqn + ImplicitSourceTerm(1e+20 * (x > 3)) - 1e-20 * (x > 3) * value == 0 This would set the value of the variable to be `value` where x > 3. -- Daniel Wheeler
