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

Boundary Condition for bifurcation: outflow-pressure

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 2, 2011, 08:35
Default Boundary Condition for bifurcation: outflow-pressure
  #1
Senior Member
 
Join Date: Feb 2011
Posts: 128
Rep Power: 6
Lilly is on a distinguished road
Dear all,
I am not very experienced in setting Boundary Conditions for the simulation of blood flow through a vessel bifurcation of the coronary arteries and have some questions concerning this:
I want to simulate a species transport (mixture) and therefore I am not allowed to set the outflow (flow rate of the vessel branches) as BC for this case. I planned to estimate the flow rate of the two vessel branches via a scaling law and do a simulation without species to get the pressure at both outlets and use these pressures as BC for the real simulations. Does somebody have experience with this and can let me know whether this procedure is usual for this case? It seems to be pretty inaccurate to me. Furthermore I don’t know whether I should set the pressure distribution at the outlet cross-section area as BC or just a constant averaged value for the whole cross-section.
It would be really nice, if somebody give me some advice!
Thanks a million in advance!
Lilly
Lilly 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
OUTFLOW boundary condition for scalars lalupp Main CFD Forum 0 November 13, 2010 05:43
External Radiation Boundary Condition (Two sided wall), Grid Interface CFD XUE FLUENT 0 July 8, 2010 06:49
vorticity boundary condition bearcharge Main CFD Forum 0 May 14, 2010 11:32
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
Pressure boundary condition C-H Kuo Main CFD Forum 9 August 28, 1998 12:07


All times are GMT -4. The time now is 09:49.