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] 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]> on behalf of [email protected] <[email protected]> *Sent:* Thursday, August 3, 2017 8:29:09 AM *To:* [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

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Awesome, thank you Paul. Adam On 08/03/2017 11:19 AM, [email protected] wrote:

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] 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]> on behalf of [email protected] <[email protected]> *Sent:* Thursday, August 3, 2017 8:29:09 AM *To:* [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] https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users

_______________________________________________ Nek5000-users mailing list [email protected] https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users

_______________________________________________ Nek5000-users mailing list [email protected] https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users