Yes - that should work. Set ifuservp = .true. and then, in uservp() if (ifield.eq.1) then ! fluid properties udiff = param(2) utrans = param(1) else ! thermal properties udiff = your diffusivity utrans = your rhoCp endif ________________________________ From: Nek5000-users <[email protected]> on behalf of [email protected] <[email protected]> Sent: Thursday, August 3, 2017 10:13:03 AM To: [email protected] Subject: Re: [Nek5000-users] Conjugate heat transfer with complex properties Hi Paul, Yep, there's some melting going on. There's a porous structure that does not melt and wax trapped in the porous structure. The wax melts and re-solidifies. There really nothing complex happening with the geometry. A static mesh should do the job. The material properties are the challenge. I think I could model the material behavior as having a non-linear specific heat capacity as a function of temperature. Adam On 08/03/2017 09:30 AM, [email protected]<mailto:[email protected]> wrote: Hi Adam, Can you be more specific? Is it melting? In principle, it should be possible as that was one of the original applications for Nek5000. In practice, however, I would rate that as still a research area (at least from the Nek perspective). I guess that melting is much easier than freezing, however. Paul ________________________________ From: Nek5000-users <[email protected]><mailto:[email protected]> on behalf of [email protected]<mailto:[email protected]> <[email protected]><mailto:[email protected]> Sent: Thursday, August 3, 2017 8:29:09 AM To: [email protected]<mailto:[email protected]> Subject: [Nek5000-users] Conjugate heat transfer with complex properties Hello, I have a conjugate heat transfer problem where the solid material is a composite that undergoes a phase transformation. Is it possible to model a material like this in Nek5000? Thanks, Adam Lange _______________________________________________ Nek5000-users mailing list [email protected]<mailto:[email protected]> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users _______________________________________________ Nek5000-users mailing list [email protected]<mailto:[email protected]> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users