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

Refrigerant

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 29, 2012, 19:27
Default Using Refrigerant in CFX
  #1
New Member
 
Jaroslav Šustek
Join Date: Aug 2012
Posts: 2
Rep Power: 0
Jardo is on a distinguished road
Hello, I would like to ask, how can I work with refrigerant in CFX. For example, I want to work with refirgerant R410a. How is it possible? Thank you for your answers

Last edited by Jardo; August 29, 2012 at 20:05.
Jardo is offline   Reply With Quote

Old   August 29, 2012, 21:35
Default
  #2
Senior Member
 
Erik
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 462
Rep Power: 8
evcelica is on a distinguished road
Well, what do you want to do with the refrigerant? what physics are you simulating?
evcelica is offline   Reply With Quote

Old   August 30, 2012, 04:21
Default
  #3
New Member
 
Jaroslav Šustek
Join Date: Aug 2012
Posts: 2
Rep Power: 0
Jardo is on a distinguished road
I would like to compare two refrigerants (CO2 and R410a) flowing in bend. I am writing an article about pressure losses in cooling system and I want to compare these refrigerants.
Jardo is offline   Reply With Quote

Old   August 30, 2012, 07:22
Default
  #4
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 9,856
Rep Power: 78
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
If it is just single phase and incompressible then the only important parameters are density and viscosity. A simulation to compare them is straight forward - and probably unnecessary. You can probably work out a Re number for both flows, which leads to friction factors and then pressure loss - this is all empirical so does not require CFD. But it does not generate as many colourful pictures as a good CFD analysis.

If it is multiphase it is a bit more complex than that....
ghorrocks is offline   Reply With Quote

Old   August 31, 2012, 08:30
Default
  #5
New Member
 
Join Date: Oct 2011
Posts: 20
Rep Power: 5
mat_cfd is on a distinguished road
You can look into Real fluid properties in Solver: modelling help for using refrigerant. I am also reading abt it and havnt used it before. Its not quite clear how to set up Acentric factor for pulling in saturation curve. If sbdy through more light into it or have come across any tutorial in this regard, pl share the same.
mat_cfd is offline   Reply With Quote

Old   September 1, 2012, 08:25
Default
  #6
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 9,856
Rep Power: 78
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Before going into details of the complex material properties for refrigerants like this, first work out whether it is required. If the purpose of the analysis is just to compare the flow losses of two pipe bends for a single phase then none of the saturation curve stuff is required and just density and viscosity is all that is required.
ghorrocks is offline   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
Condensation of refrigerant inside the circular tube vishalpatil FLUENT 2 May 2, 2011 05:31
Question about Real gas model for refrigerant in Fluent ddqp FLUENT 0 March 21, 2011 23:38
refrigerant as material bilal CFX 0 October 23, 2008 02:25
how to simulate evaporating process of refrigerant chingyou FLUENT 0 October 25, 2005 22:41
Can we use CFD to simulate a refrigerant system Xio Wang Main CFD Forum 0 March 15, 2003 01:31


All times are GMT -4. The time now is 06:39.