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

Different Boundry Condition Type at the same face

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 31, 2009, 00:03
Angry Different Boundry Condition Type at the same face
  #1
New Member
 
Join Date: Jul 2009
Posts: 4
Rep Power: 17
cupidvenus is on a distinguished road
Hi, everybody.
I met a problem. Two kind of fluid A and B mix together. And the mixing fluid flow in a rectangle pipe. Three side of the pipe is setup as wall boundry condition. The other side of the pipe is a special boundry condition. Fluid A can pass through this side and fluid B can not. It means this side is pressure-out or massflow-out boundry condition for fluid A, and is wall boundry condition for fluid B. How can I setup it?
cupidvenus is offline   Reply With Quote

Old   August 28, 2009, 06:39
Default
  #2
New Member
 
Join Date: Jul 2009
Posts: 4
Rep Power: 17
cupidvenus is on a distinguished road
I really need your help!
cupidvenus is offline   Reply With Quote

Old   August 28, 2009, 07:17
Default outflow
  #3
Member
 
Anastasios
Join Date: Mar 2009
Posts: 34
Rep Power: 17
ageorg is on a distinguished road
i am not very sure but i think that if you use an outflow bc and you are using say the mixture or the eulerian multiphase model than you can specify outflow rates for phase separatelly. Hence, you can set the rate for phase a equal to 1 and the corresponding rate of phase B equal to 0.
ageorg is offline   Reply With Quote

Old   August 29, 2009, 02:06
Default
  #4
Member
 
MOHSEN Zendehbad
Join Date: Aug 2009
Posts: 35
Rep Power: 17
mohsen zendehbad is on a distinguished road
you'd better use the DEFINE_PROFILE udf, try to find this topic in udf help of the fluent(use the index). there you can define the BC for different phases differently(there you can access different phases by using different domain numbers,by looping over the faces in different domains you can impose what you want), but it needs some time to get the capablity of working with udf.
mohsen zendehbad is offline   Reply With Quote

Old   September 2, 2009, 22:11
Default
  #5
New Member
 
Join Date: Jul 2009
Posts: 4
Rep Power: 17
cupidvenus is on a distinguished road
ageorg and mohsen zendehbad, thank you very much, I will try both method.
cupidvenus is offline   Reply With Quote

Old   September 10, 2009, 06:16
Default
  #6
New Member
 
Join Date: Jul 2009
Posts: 4
Rep Power: 17
cupidvenus is on a distinguished road
Quote:
Originally Posted by ageorg View Post
i am not very sure but i think that if you use an outflow bc and you are using say the mixture or the eulerian multiphase model than you can specify outflow rates for phase separatelly. Hence, you can set the rate for phase a equal to 1 and the corresponding rate of phase B equal to 0.
ageorg, I'v tried your method, Fluent do not allow one set flow rate weighting of fluid A or B. Only flow rate weighting of mixture is allowed.
cupidvenus is offline   Reply With Quote

Reply


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
[Commercial meshers] Fluent3DMeshToFoam simvun OpenFOAM Meshing & Mesh Conversion 50 January 19, 2020 16:33
[Netgen] Import netgen mesh to OpenFOAM hsieh OpenFOAM Meshing & Mesh Conversion 32 September 13, 2011 06:50
[mesh manipulation] Using createPatch in place of couplePatches sripplinger OpenFOAM Meshing & Mesh Conversion 8 November 13, 2009 08:14
reconstructParMesh not working with an axisymetric case francesco OpenFOAM Bugs 4 May 8, 2009 06:49
RasInterFoam STRANGE RESULTS AT BOUNDARY kumar2 OpenFOAM Running, Solving & CFD 8 March 24, 2008 19:38


All times are GMT -4. The time now is 18:55.