PCM X porous media

libya81 · March 18, 2017, 21:24

Hello every one,

I want to model a PCM in cylinder. Am I need to model the PCM as a Porous media ?

Tanmay95 · March 22, 2017, 00:17

If you are using ANSYS fluent, it has a solidification/melting model. This model automatically models a porous material. I recently used it for a slab of pcm in electronic cooling applications(there was no flow though). The results I got were consistent with theoretical results I had.

Sent from my iPad using CFD Online Forum mobile app

sunilpatil · March 22, 2017, 01:10

Yes whatever Tanmay said is right, you can model it with solidification/melting model but for that you need to have melting Temperature and some other parameters.

Sent from my MI 4W using CFD Online Forum mobile app

libya81 · March 22, 2017, 13:17

Thanks Tanmay95 and sunilpatil,

what about the the BC, Am I need to set it to porous-jump or just leave it as an interior.

Thnaks in advance

Tanmay95 · March 22, 2017, 15:47

I left it as interior.

sunilpatil · March 23, 2017, 04:51

The interface between solid and liquid it treats as a porous medium and it adds momentum sink term in that region for reduction in velocity. That interface may be Dynamics r static depends on ur simulation type ( study r transient)

Sent from my MI 4W using CFD Online Forum mobile app

libya81 · April 13, 2017, 20:53

hello guys,
I have a question if you could help me with.

I am trying to follow a paper of solidification and melting to get the same results that the Author got. He mentioned in the paper the mushy zone modeled as a "Pseudo" porous zone.

If I am correct he talks about the pseudo-transient option under the couple solution method.

But, in the problem set up, he choose the simple method as the solution method.

can anybody put me on the right track, please

March 18, 2017, 21:24	PCM X porous media	#1
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	Hello every one, I want to model a PCM in cylinder. Am I need to model the PCM as a Porous media ?

March 22, 2017, 01:10		#3
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 179 Rep Power: 14	Yes whatever Tanmay said is right, you can model it with solidification/melting model but for that you need to have melting Temperature and some other parameters. Sent from my MI 4W using CFD Online Forum mobile app __________________ Regards, Sunil

March 23, 2017, 04:51		#6
sunilpatil Senior Member sunil Join Date: Jul 2012 Location: Bangalore Posts: 179 Rep Power: 14	The interface between solid and liquid it treats as a porous medium and it adds momentum sink term in that region for reduction in velocity. That interface may be Dynamics r static depends on ur simulation type ( study r transient) Sent from my MI 4W using CFD Online Forum mobile app __________________ Regards, Sunil

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Multiphase Porous Media Flow - Convergence Issues	VT_Bromley	FLUENT	8	May 30, 2024 03:59
Porous media setup issues in Fluent	Bernard Van	FLUENT	29	January 26, 2017 05:09
porous media model validation	Tensian	FLUENT	0	September 23, 2016 06:04
How to model granular flow through porous media	Axius	FLUENT	2	August 7, 2014 11:34
porous media: Fluent or Star-CD?	Igor	Main CFD Forum	0	December 5, 2002 16:16

March 22, 2017, 00:17		#2
Tanmay95 New Member Tanmay Inamdar Join Date: Jan 2015 Posts: 10 Rep Power: 11	If you are using ANSYS fluent, it has a solidification/melting model. This model automatically models a porous material. I recently used it for a slab of pcm in electronic cooling applications(there was no flow though). The results I got were consistent with theoretical results I had. Sent from my iPad using CFD Online Forum mobile app

March 22, 2017, 13:17		#4
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	Thanks Tanmay95 and sunilpatil, what about the the BC, Am I need to set it to porous-jump or just leave it as an interior. Thnaks in advance

March 22, 2017, 15:47		#5
Tanmay95 New Member Tanmay Inamdar Join Date: Jan 2015 Posts: 10 Rep Power: 11	I left it as interior.

April 13, 2017, 20:53		#7
libya81 New Member Join Date: Apr 2012 Posts: 24 Rep Power: 14	hello guys, I have a question if you could help me with. I am trying to follow a paper of solidification and melting to get the same results that the Author got. He mentioned in the paper the mushy zone modeled as a "Pseudo" porous zone. If I am correct he talks about the pseudo-transient option under the couple solution method. But, in the problem set up, he choose the simple method as the solution method. can anybody put me on the right track, please