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

fluent error: absolute pressure limited to 1

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 19, 2015, 21:46
Default fluent error: absolute pressure limited to 1
  #1
New Member
 
Yicong Cong
Join Date: Apr 2015
Posts: 2
Rep Power: 0
treeman1 is on a distinguished road
Hi,
I am a learner of Fluent. I encounter a problem and cannot handle it. Please help me.

I am dealing with a blast wave problem, but error occurs during calculation.
absolute pressure limited to 1
temperature limited to 1
absolute pressure limited to 5e+10
temperature limited to 5e+6
( I have increased the upper limit)


My domian is a 1/8 sphere.

I set operating pessure to 0, so all pressures in inlet and outlet are absolute pressures.
The inlet is the small spheric surface and the type is pressure-inlet. Profile is used to input the pressure history.

Outlet is the big spheric surface with gauge pressure to be 101325.
I initialize the solver by hand with 101325pa in the domain.
Material is ideal gas.
Model settings are inviscid and energy on.
Sovler is density-based, explicit, first upwind.
Time step is 1e-6s. And the grid is smoothed over 0.5 for orthogonal quality.
I have no idea why this error arise. Please help me. Many thanks!
treeman1 is offline   Reply With Quote

Old   April 23, 2015, 23:50
Default Still in trouble
  #2
New Member
 
Yicong Cong
Join Date: Apr 2015
Posts: 2
Rep Power: 0
treeman1 is on a distinguished road
I used contour to find out in which area the temperature is limited to 1.

And I found that it's the cells just close to the centre of the pressure-inlet. I checked the profile I input and cannot find any error in it.
Do anyone know what's going wrong with my case?
Hope someone could help me. OTZ

Quote:
Originally Posted by treeman1 View Post
Hi,
I am a learner of Fluent. I encounter a problem and cannot handle it. Please help me.

I am dealing with a blast wave problem, but error occurs during calculation.
absolute pressure limited to 1
temperature limited to 1
absolute pressure limited to 5e+10
temperature limited to 5e+6
( I have increased the upper limit)


My domian is a 1/8 sphere.

I set operating pessure to 0, so all pressures in inlet and outlet are absolute pressures.
The inlet is the small spheric surface and the type is pressure-inlet. Profile is used to input the pressure history.

Outlet is the big spheric surface with gauge pressure to be 101325.
I initialize the solver by hand with 101325pa in the domain.
Material is ideal gas.
Model settings are inviscid and energy on.
Sovler is density-based, explicit, first upwind.
Time step is 1e-6s. And the grid is smoothed over 0.5 for orthogonal quality.
I have no idea why this error arise. Please help me. Many thanks!
treeman1 is offline   Reply With Quote

Reply

Tags
error, fluent

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
Fluent Pressure outlet b.c. beanlee999 FLUENT 12 January 17, 2015 17:56
Pressure BC for combustion chamber Giuki FLUENT 1 July 19, 2011 11:35
How to give pressure inlet in Fluent Vijayaragavan Main CFD Forum 1 December 17, 2007 10:40
Does star cd takes reference pressure? monica CD-adapco 1 April 19, 2007 11:26
absolute pressure limited Boisson FLUENT 1 December 9, 2001 14:21


All times are GMT -4. The time now is 01:04.