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

difference between interface compression and interface reconstruction

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 20, 2013, 20:43
Default difference between interface compression and interface reconstruction
  #1
Member
 
niru
Join Date: Apr 2012
Posts: 55
Rep Power: 14
Niru is on a distinguished road
In CFX, the free surface model with surface tensio force used interface compression. How is this different from interface reconstruction like PLIC algorithm. Can know the pros and cons of both.
What software uses interface reconstruction and compression.
Niru is offline   Reply With Quote

Old   November 20, 2013, 20:45
Default interface drag in homogeneous free surface model
  #2
Member
 
niru
Join Date: Apr 2012
Posts: 55
Rep Power: 14
Niru is on a distinguished road
why is interface drag not modelled in homogeneous free surface model.
Niru is offline   Reply With Quote

Old   November 21, 2013, 05:02
Default
  #3
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,854
Rep Power: 144
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
CFX uses a compressive scheme for the volume fraction. It does not have a reconstruct scheme like Fluent does.

There is no interface drag in homogenous flow - both phases by definition are moving with no relative slip because they are homogeneous! That is why there is no interface drag model.
ghorrocks is offline   Reply With Quote

Old   January 5, 2014, 15:01
Default compresive scheme
  #4
Member
 
niru
Join Date: Apr 2012
Posts: 55
Rep Power: 14
Niru is on a distinguished road
Can you please explain me how compressive scheme for volume fraction works in CFX. Are there any related equations.
Niru is offline   Reply With Quote

Old   January 12, 2014, 07:11
Default
  #5
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,854
Rep Power: 144
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
I am not sure if it is in the documentation. If you cnanot find it then ask ANSYS support. I think the ANSYS CFX multiphase training course also covers it.
ghorrocks is offline   Reply With Quote

Old   January 20, 2014, 17:05
Default
  #6
Member
 
niru
Join Date: Apr 2012
Posts: 55
Rep Power: 14
Niru is on a distinguished road
Quote:
Originally Posted by ghorrocks View Post
I am not sure if it is in the documentation. If you cnanot find it then ask ANSYS support. I think the ANSYS CFX multiphase training course also covers it.
Ok, I got the details of the model. Thanks.
Niru is offline   Reply With Quote

Old   July 14, 2016, 12:29
Default
  #7
mvo
New Member
 
Maximilian
Join Date: Feb 2016
Location: RLP, Germany
Posts: 6
Rep Power: 10
mvo is on a distinguished road
So far as I know uses ANSYS the CICSAM method for reconstructing the free surface. but I'm not 100 percent safe

here the link:
PHP Code:
http://www.ptmts.org/Waclaw-Koron-2-08.pdf 
mvo is offline   Reply With Quote

Old   July 14, 2016, 20:08
Default
  #8
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,854
Rep Power: 144
ghorrocks is just really niceghorrocks is just really niceghorrocks is just really niceghorrocks is just really nice
No, this is not correct. ANSYS CFX uses the compressive scheme (as mentioned previously in this thread).

ANSYS Fluent has CICSAM as an available option, you might be confused with that.
ghorrocks is offline   Reply With Quote

Old   July 16, 2016, 05:11
Default
  #9
mvo
New Member
 
Maximilian
Join Date: Feb 2016
Location: RLP, Germany
Posts: 6
Rep Power: 10
mvo is on a distinguished road
Oh sorry for my mistake. I should read before i post something.
mvo is offline   Reply With Quote

Reply

Tags
interface compression, plic, vof, volume fraction


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
Wind turbine simulation Saturn CFX 60 July 17, 2024 06:45
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 18:44
Error finding variable "THERMX" sunilpatil CFX 8 April 26, 2013 08:00
RPM in Wind Turbine Pankaj CFX 9 November 23, 2009 05:05


All times are GMT -4. The time now is 20:48.