On Tue, Apr 22, 2014 at 3:34 PM, Seufzer, William J. (LARC-D307) <[email protected]> wrote: > FiPy, > > I have been successful with getting Trilinos installed and running on our > cluster. Thanks for helping to resolve the parallelization issues but now > there's another matter. > > I have a volumetric heat source and if I add 50 Joules of energy into a mesh > during a short run, then at the end I have been able to use Q= mass * > heatCapacity * deltaTemperature across the mesh and I find 50 Joules. I'm > using constant density and heatCapacity values (no Temperature dependance). > > I'm confident I have the heat source and FiPy equation set up correctly. > > However, when I run in parallel I find more that 2x the amount of energy and > higher temperatures in the mesh. I've run 3 different mesh densities and the > problem changes with mesh density but appears independent of the step size > (delta Time). >
A few things you might want to check: * if you are calculating a global value, make sure it is actually being evaluated correctly and you are not just getting the local (global) value * if you are using the global value as part of the calculation and not just a post-process then it might lead to the wrong field values if it is calculated incorrectly * check that the solver is converging in parallel -- Daniel Wheeler _______________________________________________ fipy mailing list [email protected] http://www.ctcms.nist.gov/fipy [ NIST internal ONLY: https://email.nist.gov/mailman/listinfo/fipy ]
