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

forward step tutorial

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 15, 2013, 16:34
Default forward step tutorial
  #1
Senior Member
 
Mahdi Hosseinali
Join Date: Apr 2009
Posts: 124
Rep Power: 8
anishtain4 is on a distinguished road
I'm trying to run the forward step tutorial with rhoCentralFoam but in non-normalised form. To achieve this I tried to change some settings

in thermophysical dictionary for air as:
cp=1.006
molWeight= 28.97

since the adiabatic index for air is 1.4 then with:
Cp=ghama*nMol*R/(ghama-1)/molWeight

one would have: nMol=0.001

for a normal condition in initial conditions also T=273, U=990 ( to have Ma=3) and to have rho=1.2 from P=rho*R*T/molWeight would yield p=94022

in an inviscid flow characteristic length is not important, but the angles and proportions so no modification is needed on geometry. After setting all these you can't have a run. Can anyone please tell me why?
anishtain4 is offline   Reply With Quote

Old   January 17, 2013, 13:44
Default
  #2
Senior Member
 
Mahdi Hosseinali
Join Date: Apr 2009
Posts: 124
Rep Power: 8
anishtain4 is on a distinguished road
No one can try it and tell me something? pleaseeee
anishtain4 is offline   Reply With Quote

Old   January 17, 2013, 17:02
Default
  #3
New Member
 
David Huckaby
Join Date: Jul 2009
Posts: 21
Rep Power: 7
dhuckaby is on a distinguished road
Have you tried cp = 1006 J/(kg-K) and nMoles = 1 ?
dhuckaby 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
pimpleFoam: turbulence->correct(); is not executed when using residualControl hfs OpenFOAM Running, Solving & CFD 3 October 29, 2013 09:35
pisoFoam with k-epsilon turb blows up - Some questions Heroic OpenFOAM Running, Solving & CFD 26 December 17, 2012 04:34
Speedup with GAMG for simplefoam forward Step tutlhino OpenFOAM Running, Solving & CFD 9 June 24, 2007 21:44
forward step: treating singularity pt for WENO FV DSS Main CFD Forum 1 January 18, 2007 03:15
Forward step shuo OpenFOAM Running, Solving & CFD 1 October 23, 2006 02:15


All times are GMT -4. The time now is 22:38.