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

Oscillations rhoSonicFoam with realgas effects

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 3, 2006, 07:36
Default Hi all I am trying to run r
  #1
abhishek
Guest
 
Posts: n/a
Hi all

I am trying to run rhoSonicFoam with real gas effects. I have tried to extend the application of rhoSonicFoam to real gases.

I tried the shock tube test case with the discontinuity in between the domain.
Initial conditions are

UL=0 UR= - 428
pL=131820 PR=36679
TL=TR=389
Left boundary condition is wall
right boundary condition is pressure based
zero gradient for other quantites
constant gas mixture of H2: O2:AR::1:2:7
time step is 1e-8

after running this test case i am getting oscillations in temperature,pressure and density behind the shock wave through the solution itself seems to be correct ie the postion of shock.
IF we replace with UR=0 as initial conditions the oscillations are not seen.
I have tried with saveral interpolation schemses and other combinations.

Can anyone comment on this.
  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
BC implementation in rhoSonicFoam srinath OpenFOAM Running, Solving & CFD 2 July 12, 2008 09:02
RhoSonicFoam errors srinath OpenFOAM Running, Solving & CFD 0 June 3, 2008 07:06
RhoSonicFoam srinath OpenFOAM Running, Solving & CFD 0 May 30, 2008 01:21
RhoSOnicFoam shuo OpenFOAM Running, Solving & CFD 2 November 6, 2006 01:25
RhoSonicFoam shuo OpenFOAM Running, Solving & CFD 1 October 9, 2006 19:57


All times are GMT -4. The time now is 08:58.