CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > ANSYS > FLUENT

relationship of density with pressure and temperature in Fluent

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 25, 2017, 05:21
Default relationship of density with pressure and temperature in Fluent
  #1
New Member
 
ehsan
Join Date: Apr 2012
Location: UK
Posts: 14
Rep Power: 11
ehsan1986 is on a distinguished road
Hi all,

Can someone provide me with a reference which shows the relationship of density with pressure and temperature, and is embedded in Fluent?

Many thanks,
Ehsan
ehsan1986 is offline   Reply With Quote

Old   August 25, 2017, 07:05
Default
  #2
Member
 
Kirill-MIPT's Avatar
 
Kirill Borodin
Join Date: Mar 2016
Posts: 60
Rep Power: 7
Kirill-MIPT is on a distinguished road
Hello! Dependence of density on pressure and temperature is called equation of state. There is a number of such equations in fluent

What do you need it for?

Sent from my Redmi Note 3 using CFD Online Forum mobile app
Kirill-MIPT is offline   Reply With Quote

Old   August 25, 2017, 07:42
Default
  #3
New Member
 
ehsan
Join Date: Apr 2012
Location: UK
Posts: 14
Rep Power: 11
ehsan1986 is on a distinguished road
I need to reference to it in a research paper. I am modelling a multi-phase turbulence flow using VOF and k-epsilon models.
ehsan1986 is offline   Reply With Quote

Old   August 25, 2017, 08:10
Default
  #4
Senior Member
 
Cees Haringa
Join Date: May 2013
Location: Delft
Posts: 607
Rep Power: 0
CeesH is on a distinguished road
it depends on how you set it.
The default materials typically have constant density and constant temperature (energy equation off), they will not be affected by the local values of your pressure.

These things are only influenced if you explicitly set them to be. So, if you want to include that in your research paper, make sure you also enabled the relevant options in the software!
CeesH is offline   Reply With Quote

Old   August 25, 2017, 15:11
Default
  #5
Member
 
Kirill-MIPT's Avatar
 
Kirill Borodin
Join Date: Mar 2016
Posts: 60
Rep Power: 7
Kirill-MIPT is on a distinguished road
So you conducted a research via fluent. Why don't you just refer to the equation of state that you used in the research? Isn't that enough? If not, the first thing that comes to mind is setting proper values of pressure and temperature at the inlet and initializing the field, so you get the value of density under certain conditions

Sent from my Redmi Note 3 using CFD Online Forum mobile app
Kirill-MIPT is offline   Reply With Quote

Reply

Tags
density, pressure, pressure and density, temperature, temperature and density

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ansys CFX problem: unexpected very high temperatures in premix laminar combustion faizan_habib7 CFX 4 February 1, 2016 17:00
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 06:27
Water subcooled boiling Attesz CFX 7 January 5, 2013 03:32
Density of fluid with respect to temperature and pressure akash_max CFX 4 November 6, 2011 09:00
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 05:13


All times are GMT -4. The time now is 11:52.