CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > SU2

Compressible flow with real gas properties

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 6, 2016, 00:34
Default Compressible flow with real gas properties
  #1
New Member
 
Shyam Sunder
Join Date: Sep 2015
Posts: 7
Rep Power: 3
ssyadav is on a distinguished road
Hello All

Can SU2 be used to simulate compressible supersonic flow of CO2
through a converging-diverging ejector considering real gas properties of CO2?

Can SU2 handle non-equilibrium two phase flows with phase change?

Thanks
ssyadav is offline   Reply With Quote

Old   January 26, 2017, 12:03
Default
  #2
Senior Member
 
Tom Fahner
Join Date: Mar 2009
Location: Delft, Netherlands
Posts: 353
Rep Power: 14
tomf is on a distinguished road
Send a message via MSN to tomf Send a message via Skype™ to tomf
Hi,

I was wondering if you ever managed to get this to work? At the moment I am trying to get such a simulation going. With standard air it seems to work, but not with real gas. The simulation gets stuck at the first iteration.

Regards,
Tom
tomf is offline   Reply With Quote

Old   January 27, 2017, 00:07
Default
  #3
New Member
 
Shyam Sunder
Join Date: Sep 2015
Posts: 7
Rep Power: 3
ssyadav is on a distinguished road
Hello Tom

We are basically interested in compressible two phase flows with phase change. I never tried SU2 for that not even with single phase flow with real gas properties. So I really ca not comment on this. I think SU2 does not have the capability to model phase change problems right now. If you know some tool for this please let me know.
ssyadav is offline   Reply With Quote

Old   January 27, 2017, 06:20
Default
  #4
Senior Member
 
Tom Fahner
Join Date: Mar 2009
Location: Delft, Netherlands
Posts: 353
Rep Power: 14
tomf is on a distinguished road
Send a message via MSN to tomf Send a message via Skype™ to tomf
Hi,

Ok thanks for the response. With regards to your problem: It looks like OpenFOAM could be used, but it would require a significant amount of programming. It allows for 2-phase flow with phase change and it allows for compressible flow. However you probably need a lot of hardware to get the simulation going reliably and the programming efforts to combine the right pieces of the puzzle are significant I would assume.

Might be best to see if there are groups working on similar projects.

Regards,
Tom
tomf is offline   Reply With Quote

Old   January 27, 2017, 07:02
Default
  #5
New Member
 
Shyam Sunder
Join Date: Sep 2015
Posts: 7
Rep Power: 3
ssyadav is on a distinguished road
Hello Tom

I do not know about OpenFOAM code structure and programming currently, but one has to implement "two fluid models" like the Seven equation model or Five equation model depending upon whether thermal and mechanical non-equilibrium is allowed or not. Also, Roe type schemes or Flux vector splitting based schemes give better resolution. OpenFOAM I think uses Kurganov-Tadmor central scheme.
ssyadav is offline   Reply With Quote

Old   January 27, 2017, 07:40
Default
  #6
Senior Member
 
Tom Fahner
Join Date: Mar 2009
Location: Delft, Netherlands
Posts: 353
Rep Power: 14
tomf is on a distinguished road
Send a message via MSN to tomf Send a message via Skype™ to tomf
Hi,

It seems like that what you want is different from what I assumed it was. So than probably no OpenFOAM is not the most likely candidate.

Regards,
Tom
tomf is offline   Reply With Quote

Reply

Tags
compressible flows, real gases

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
Issues on the simulation of high-speed compressible flow within turbomachinery dowlee OpenFOAM Running, Solving & CFD 8 October 25, 2016 19:48
Setting the height of the stream in the free channel kevinmccartin CFX 10 July 9, 2015 21:36
error message cuteapathy CFX 14 March 20, 2012 07:45
What is the difference between liquid reactive flow and gas reactive flow? James Main CFD Forum 6 May 15, 2009 12:14
properties of gas flow in channels romio FLUENT 1 June 28, 2007 14:30


All times are GMT -4. The time now is 23:32.