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

Compressible N-S bound. condn.

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

LinkBack Thread Tools Display Modes
Old   July 6, 1999, 11:30
Default Compressible N-S bound. condn.
Posts: n/a
hi all,

I would like to know what type of bound.condition is suitable for compressible viscous flow over a flate plate as avalidation case. 1. shall exit pressure be specified 2. either p0 & t0 at inlet or u_infinity at inlet be specified ? thanks in advance
  Reply With Quote

Old   July 6, 1999, 12:46
Default Re: Compressible N-S bound. condn.
John C. Chien
Posts: n/a
(1). It depends on many things. (2). The first one is the Mach number, whether it is a low subsonic flow, or transonic flow, or supersonic flow. (3). The second one is the leading edge geometry, whether it is a sharp leading edge or a blunt leading edge. (4). The third one is the Reynolds number. And the fourth one is your formulation. (5). If it is a subsonic problem, using a specified velocity at a far field is all right. (make sure that the boundary condition is far away from the wall.) (6). The parallel downstream condition cal be used also. (7). It depends on your formulation as to whether the exit pressure and the inlet total pressure should be specified or not. This is normally the case when you have flow through a channel ,or nozzle. I think you can formulate your problem in this way also, that is flow through a 2-D channel with large spacing between the walls.
  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
Compressible -> incompressible. Jinwon Main CFD Forum 6 November 23, 2007 22:07
What on earth is the criteria for the compressible xumustc Main CFD Forum 6 June 22, 2007 07:47
urgent help needed with 2d compressible flow James FLUENT 2 June 20, 2007 04:22
compressible newposter Main CFD Forum 0 September 10, 2006 03:49
Compressible vs. Incompressible formulations Fernando Velasco Hurtado Main CFD Forum 3 January 7, 2000 17:51

All times are GMT -4. The time now is 12:23.