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

the shock tube problem and its artifacts with sonicFoam

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 16, 2011, 08:58
Question the shock tube problem and its artifacts with sonicFoam
  #1
New Member
 
Marko Josic
Join Date: Dec 2010
Posts: 20
Rep Power: 15
emjay is on a distinguished road
Hello OpenFOAMers,

here is a simple problem. I took the shock tube case from tutorial/sonicFoam/laminar and modified it from an 1D to a 2D-Dimensional Problem.

The mesh has 1000x64x1 (x,y,z) elements in each coordinate.
I want to calculate the inviscid Solution of this case, so i set the boundary conditions for pressure to zerogradient, for the walls to slip and for the temperatur to zerogradient.

in my case/png is a video where you see the velociy in y-direction.
So why is there a velocity u_y grater?
I tried different schemes, a finer mesh, and different bc but nothing helps.
The velocity distribution seems to be generated through the shock wave.

May be someone has an idea and could try it on yours computer, with TVD or MUSCL scheme.

With best regards
MJ
Attached Images
File Type: jpg shock_tube_problem.0010.jpg (21.2 KB, 54 views)
Attached Files
File Type: gz shockTube.tar.gz (13.1 KB, 11 views)
emjay is offline   Reply With Quote

Reply

Tags
shock tube, sonicfoam

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On



All times are GMT -4. The time now is 08:26.