# BC in axisym case

 User Name Remember Me Password
 Register Blogs Members List Search Today's Posts Mark Forums Read

 LinkBack Thread Tools Display Modes
 September 21, 2005, 09:50 BC in axisym case #1 faber Guest   Posts: n/a I'm wondering what boundary condition is to be set at center line of my flow domain: 2D axisymmetric case, flow in pipe, air, subsonic, may contain shocks, inviscid, no-slip wall condition... can anyone advise?

 September 21, 2005, 15:05 Re: BC in axisym case #2 Mani Guest   Posts: n/a Let me ask you a dumn question: What boundary are you talking about? Wouldn't any cell surface on that singular line have zero area (think 3D)? If so, would it matter what fluxes you assign on the "surface",... if flux times surface is zero, anyway?

 September 22, 2005, 04:54 Re: BC in axisym case #3 faber Guest   Posts: n/a right, but in 2D the line has certain length so it can be presumed certian flux will be passsing it.....

 September 22, 2005, 15:13 Re: BC in axisym case #4 Mani Guest   Posts: n/a That's what it looks like, but do you see my point? Even though there is a length associated with that cell, the flux through the center line should be zero. This can be your "boundary condition". Remember that your 2D problem is just a simplified representation of the 3-dimensional one.

 October 4, 2005, 08:43 Re: BC in axisym case #5 faber Guest   Posts: n/a ahhhaaaaaa..... right you are.. just now I can see it. thanks a lot

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post hsieh OpenFOAM 9 August 16, 2015 14:53 Peter88 OpenFOAM 5 August 18, 2011 01:23 mellanoxuser OpenFOAM Running, Solving & CFD 0 February 8, 2008 17:52 vijay FLUENT 1 April 24, 2006 11:11 Jonas Larsson Main CFD Forum 0 April 2, 2004 10:25

All times are GMT -4. The time now is 13:59.

 Contact Us - CFD Online - Top