CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

Pressure boundary condition

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

LinkBack Thread Tools Display Modes
Old   February 26, 2013, 06:29
Default Pressure boundary condition
Senior Member
Simbelmynė's Avatar
Join Date: May 2012
Posts: 137
Rep Power: 5
Simbelmynė is on a distinguished road

So I was wondering about the pressure boundary condition implementation. I have a cartesian system with a curved boundary.

Should I use normal derivative when approximating the pressure at walls or should I use the gradient? Most textbooks seem to favor the normal derivative, but they do not explain why.

I use the method explained in Ferziger and Peric, 3rd ed. p.169. to create a poisson equation for pressure.

Any thoughts or comments?
Simbelmynė is offline   Reply With Quote

Old   February 26, 2013, 07:07
Senior Member
Join Date: Oct 2011
Location: UK
Posts: 193
Rep Power: 5
Aeronautics El. K. is on a distinguished road
Study pages 247-252 and 254-259. I had found them very useful in my study
I think, actually, it's better to study Chapter 8 that deals with complex geometries.

Aeronautics El. K. is offline   Reply With Quote


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
Pressure boundary condition C-H Kuo Main CFD Forum 11 September 17, 2015 11:41
Wind turbine simulation Saturn CFX 34 October 16, 2014 05:27
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
high pressure boundary condition fragzilla CFX 5 September 14, 2012 02:40
Pressure Boundary condition abishek FLUENT 1 July 28, 2008 08:14

All times are GMT -4. The time now is 01:55.