CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Model of heating of computer heat sink with pcm

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Display Modes
Old   June 5, 2007, 00:40
Default Model of heating of computer heat sink with pcm
  #1
anthro
Guest
 
Posts: n/a
Hi, has anyone done modelling of heat sink with pcm(phase change material) inside.

I am doing a model of a rectangular shape enclosed heat sink heated from below with pcm inside.

Anyone has done something similar? so that i can compare the parameters.thanks!
  Reply With Quote

Old   June 5, 2007, 08:13
Default Re: Model of heating of computer heat sink with pc
  #2
TITAN Algorithms
Guest
 
Posts: n/a
On the following page, we have some solidification front validations. This may help jump start your efforts. I also have lecture notes on an PCM application study and can send some details of that if you are interested.

http://www.titanalgorithms.com/hyper...ons/index.html

The solidification validation is at the bottom of the page.

regards

DSS
  Reply With Quote

Old   June 5, 2007, 08:27
Default Re: Model of heating of computer heat sink with pc
  #3
anthro
Guest
 
Posts: n/a
hi,

thanks for the information. I would certainly be interested in your notes on PCM study.

Actually currently the problem i am currently facing is how do i account for the thermal expansion of the PCM?

Initially i have excluded the thermal expansion of PCM and filled my enclosure fully with PCM.

However, now as I intend to include the thermal expansion factor, I have to reduce the amount of PCM in my enclosure. So there will be an PCM/air interaction in my computational model. I was intending to use a VOF model but fluent doesnt allow for heat transfer modelling using VOF model.

Do you have any suggestions? Thanks in advance.

rgds, anthro

  Reply With Quote

Old   June 5, 2007, 08:56
Default Re: Model of heating of computer heat sink with pc
  #4
TITAN Algorithms
Guest
 
Posts: n/a
I have not studied or included void modeling. Certainly a difficult problem especially with migration. However, perhaps the location of the void can be defined a prior, e.g. top of the cylinder or container or off to one corner. Then, apply a simplified vapor-phase conduction in the void space. Heat will preferentially flow to the PCM regions. The PCM simulation I have is conduction only. It was a simulation of a microgravity melting of a pure substance.

regards

DSS
  Reply With Quote

Old   June 5, 2007, 09:00
Default Re: Model of heating of computer heat sink with pc
  #5
anthro
Guest
 
Posts: n/a
thanks alot. I shall try doing that!

Btw, would youu mind sharing with me the lecture notes on an PCM application study that you mentioned about previously?

You can send it to my email acount anthgomez@hotmail.com

Thank you so much!

rgds anthro
  Reply With Quote

Old   June 5, 2007, 11:33
Default Re: Model of heating of computer heat sink with pc
  #6
TITAN Algorithms
Guest
 
Posts: n/a
I will send a link after I can upload something
  Reply With Quote

Old   June 5, 2007, 22:15
Default Re: Model of heating of computer heat sink with pc
  #7
Ahmed
Guest
 
Posts: n/a
Your description of the problem looks like a heat pump application, there are a number of heat transfer analyzers that has been used to model that situation, you can try using Google Good luck
  Reply With Quote

Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Superlinear speedup in OpenFOAM 13 msrinath80 OpenFOAM Running, Solving & CFD 18 March 3, 2015 06:36
Simulate heat transfer of heat sink in a box... chien87 CFX 8 February 8, 2011 04:50
model forced convection heat transfer on a heat sink farzad FLUENT 0 September 9, 2010 14:48
Forced convection heat transfer in heat sink Sidy FLUENT 1 October 18, 2008 03:27
Concentric tube heat exchanger (Air-Water) Young CFX 5 October 6, 2008 23:17


All times are GMT -4. The time now is 08:23.