Awesome, thank you Paul.

Adam

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 <nek5000-users-bounces@lists.mcs.anl.gov> on behalf of nek5000-users@lists.mcs.anl.gov <nek5000-users@lists.mcs.anl.gov>
Sent: Thursday, August 3, 2017 10:13:03 AM
To: nek5000-users@lists.mcs.anl.gov
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, nek5000-users@lists.mcs.anl.gov 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 <nek5000-users-bounces@lists.mcs.anl.gov> on behalf of nek5000-users@lists.mcs.anl.gov <nek5000-users@lists.mcs.anl.gov>
Sent: Thursday, August 3, 2017 8:29:09 AM
To: nek5000-users@lists.mcs.anl.gov
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

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