CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

what boundary condition is proper for simulation of shock-tube low pressure part?

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 2, 2013, 14:22
Default what boundary condition is proper for simulation of shock-tube low pressure part?
  #1
Senior Member
 
immortality's Avatar
 
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,208
Rep Power: 27
immortality is on a distinguished road
I simulated a case of shock tube with high pressure part of 932190pa and low pressure part of 303975pa.I found that during the run pressure in mid places is around 600000pa and total pressure about 650000.
now I want to only simulate low pressure part and need to replace high pressure part by an appropriate boundary condition.
then which pressure should I put there in the patch in return of high pressure part for pressure?
932190pa that is the value of high pressure part in first time or 650000 as total pressure?
which seems more correct?
Attached Images
File Type: jpg pressure-time0.jpg (11.3 KB, 27 views)
File Type: jpg pressure.time=4.5e-5.jpg (11.3 KB, 21 views)
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King.
To Be or Not To Be,Thats the Question!
The Only Stupid Question Is the One that Goes Unasked.
immortality 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
Time dependant pressure boundary condition yosuke1984 OpenFOAM Verification & Validation 3 May 6, 2015 07:16
Radiation interface hinca CFX 15 January 26, 2014 18:11
An error has occurred in cfx5solve: volo87 CFX 5 June 14, 2013 18:44
CFX fails to calculate a diffuser pipe flow shenying0710 CFX 7 March 26, 2013 05:13
Boundary Condition pressure inlet/oulet for combustion simulations Giuki FLUENT 0 May 6, 2009 11:04


All times are GMT -4. The time now is 00:14.