Learning Forum

[Aref]

Hi

I want to simulate the process of melting a PCM in a cylinder. By melting the PCM, the melted PCM exit from the cylinder and the piston move inward.

now, this is my question:

- is it possible to use dynamic mesh and solidification/melting model simultaneously?

- if the answer is "YES", can you guide me to do that?

thank you

[Rob]

Yes.  

It depends on what you're expecting to see. The melting model uses a viscosity approach to "freeze" the solid part so it doesn't move so depending on how/where you're applying the compression you may find nothing happens. Please can you post images of what you're trying to do in with some text giving more details? ANSYS staff can't open/download files. 

[Aref]

ok

initially the PCM has solid phase. By heating the piston (the piston has a electronic element), the PCM will melt and the melted PCM exit from cylinder due to external force.

I want to see the movement of piston.

 

thank you

 

[Rob]

That should work, you'll just need to be careful how you define the motion and mesh the domain to make sure the fluid can exit the cylinder. 

[Aref]

I want to use 6DOF To define the motion (Because of the external force and this fact that the motion is unknown).

the piston has an electronic element and the heat flux is not fix on its boundaries, so I should use system coupling between fluent and transient thermal (another Challenge for me).

Is there any tutorial that can help me? (especially to use dynamic mesh and solidification/melting model simultaneously)

[Keyur Kanade]

check this

https://www.youtube.com/watch?v=aTIwmEyp3_8