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

Pressure inlet condition

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 15, 2009, 09:04
Default Pressure inlet condition
  #1
New Member
 
sivakumar
Join Date: May 2009
Posts: 12
Rep Power: 8
s.sivakumar is on a distinguished road
hello all user,
I am trying to set the pressure BC at inlet, i have given pressureInletOutVelocity.
but its giving error
Starting time loop

Time = 1

DILUPBiCG: Solving for Ux, Initial residual = 1, Final residual = 0.0231447, No Iterations 2
DILUPBiCG: Solving for Uy, Initial residual = 1, Final residual = 0.0236254, No Iterations 2
DILUPBiCG: Solving for Uz, Initial residual = 1, Final residual = 0.0239755, No Iterations 2



gradientInternalCoeffs cannot be called for a genericFvPatchField (actual type pressureInletoutletVelocity)
on patch inlet of field p in file "/home_local/projects/CT-110_BSH/SimpleCFD_version1/0/p"
You are probably trying to solve for a field with a generic boundary condition.

From function genericFvPatchField<Type>::gradientInternalCoeffs( ) const
in file fields/fvPatchFields/basic/generic/genericFvPatchField.C at line 692.

FOAM exiting

I tried pressuerInletVelocity
also its giving the same error

i have attached my 0/p also please have look and help me do fix the problem.

with regards,
sivakumar
Attached Files
File Type: txt Pressure file.txt (1.1 KB, 36 views)
s.sivakumar is offline   Reply With Quote

Old   May 18, 2009, 02:16
Default
  #2
Senior Member
 
Mark Olesen
Join Date: Mar 2009
Location: http://olesenm.github.io/
Posts: 777
Rep Power: 18
olesen will become famous soon enough
Quote:
Originally Posted by s.sivakumar View Post
I am trying to set the pressure BC at inlet, i have given pressureInletOutVelocity.
but its giving error
...
gradientInternalCoeffs cannot be called for a genericFvPatchField (actual type pressureInletoutletVelocity)
on patch inlet of field p in file "/home_local/projects/CT-110_BSH/SimpleCFD_version1/0/p"
You are probably trying to solve for a field with a generic boundary condition.
As the error message indicates, you are trying to use an unknown BC type (thus it uses generic as a fallback). Not only is it undefined, but if you think about it, specifying a vector boundary condition (in this case velocity) for a scalar field (in this case pressure) is probably not what you want anyhow.
olesen is offline   Reply With Quote

Old   May 18, 2009, 05:00
Default
  #3
New Member
 
sivakumar
Join Date: May 2009
Posts: 12
Rep Power: 8
s.sivakumar is on a distinguished road
hi,
thank you for u r message.
with friendly,
sivakumar
s.sivakumar is offline   Reply With Quote

Old   October 28, 2010, 23:57
Default
  #4
New Member
 
hoaiphuong
Join Date: Sep 2010
Posts: 8
Rep Power: 6
alac1407 is on a distinguished road
Hi, everyone !
I have a problem about inlet condition
I set inlet pressure as " Total pressure model with relative pressure = 101325 Pa "
And in CFX - post, I chose Total pressure to indicate the result but it didn't exactly indicate the pressure I set in CFX - Pre
Please give me an advice!
Thank you very much in advance!
alac1407 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
Question about pressure inlet boundary condition. Alina FLUENT 1 November 30, 2007 08:39
Pressure Inlet yields wrong velocities Ben FLUENT 0 November 21, 2004 02:47
pulsating inlet boundary condition Jason CFX 1 July 29, 2004 11:47
inlet and outlet boundary condition of pump Thammasak CFX 0 February 9, 2004 14:02
Pressure inlet definitions Christian FLUENT 0 April 15, 2003 07:24


All times are GMT -4. The time now is 16:34.