CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

problem with Boundary Conditions (including pressureInletUniformVelocity)

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

LinkBack Thread Tools Search this Thread Display Modes
Old   October 4, 2017, 07:37
Default problem with Boundary Conditions (including pressureInletUniformVelocity)
New Member
Join Date: Oct 2017
Posts: 1
Rep Power: 0
Thomas Fy is on a distinguished road
Hello everyone. I am rather new to the OpenFOAM software and despite reading descriptions of some Boundary Conditions (BC), I’d like to get some practical information from the advanced users (concerning BC). I’m investigating blood flow in the human blood vessel and I hesitate whether BC I impose are appropriate. I tested several combinations (let’s assume only inlet called My_Inlet and outlet called My_Outlet):

P.S. Sorry, I don't know how can I upload image here - tried with specifing link in the 'Insert Image', but image doesn't show up. Problem is outlined in the image on imgur (check link above) or as attached PDF file.

I know that when setting velocity/flow rate on the inlet, outlet should have pressure prescribed and vice versa. That’s why I hope all presented cases above are somehow correct (I’m not talking about values, just types of BC). I wanted to confirm that by asking you, advanced users. Moreover, I encountered a BC called pressureInletUniformVelocity and despite reading its description, I don’t know how to interpret it. In the U-file for My_Inlet I’m setting this BC and giving the pressure value? Then what should be in the p-file for My_Inlet – zeroGradient? And what about the My_Outlet? Does U-file should have zeroGradient, while p-file fixedValue?
I hope I didn’t make my questions sound complex and I’d be really grateful if someone could provide me some tips/information. Moreover, which BC pair is better: velocity-pressure or pressureInletUniformVelocity-pressure?
Attached Files
File Type: pdf BC_problem.pdf (150.7 KB, 24 views)

Last edited by Thomas Fy; October 5, 2017 at 07:31. Reason: corrected data
Thomas Fy is offline   Reply With Quote


blood flow, boundary condition, pressureinletvelocity

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
CFD analaysis of Pelton turbine amodpanthee CFX 31 April 19, 2018 18:02
Out File does not show Imbalance in % Mmaragann CFX 5 January 20, 2017 10:20
Question about heat transfer coefficient setting for CFX Anna Tian CFX 1 June 16, 2013 06:28
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 17:44
[Gmsh] Import problem ARC OpenFOAM Meshing & Mesh Conversion 0 February 27, 2010 10:56

All times are GMT -4. The time now is 18:11.