characteristic boundary conditions -- CFD Online Discussion Forums

April 25, 2013, 08:03	characteristic boundary conditions	#1
shubiaohewan New Member Join Date: Apr 2013 Posts: 15 Rep Power: 13	Hi all, I would like to make sure if I get the idea right about the characteristic boundary conditions. Say, in the case of the inflow being subsonic and the outflow being supersonic, how many boundary conditions I have to impose? The flow is 3D. I guess the answer is that since the goal is to zero the inflow characteristics, I have to impose two boundary conditions at the inlet (for u+a and u characteristics) and do nothing for the outlet. Is this correct? What if in this case, I set all the inflow to zero? Will this generate any spurious waves? Best, Shu

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 Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Domain Imbalance	HMR	CFX	5	October 10, 2016 05:57
inlet boundary conditions	newOFuser	OpenFOAM	1	January 10, 2013 08:08
Characteristic boundary conditions	jelmer	OpenFOAM Running, Solving & CFD	0	October 5, 2006 07:30
[Commercial meshers] Trimmed cell and embedded refinement mesh conversion issues	michele	OpenFOAM Meshing & Mesh Conversion	2	July 15, 2005 04:15
A problem about setting boundary conditions	lyang	Main CFD Forum	0	September 19, 1999 18:29

All times are GMT -4. The time now is 07:47.