CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

Reduced domain/ Pressure inlet to velocity inlet

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 26, 2013, 15:02
Default Reduced domain/ Pressure inlet to velocity inlet
  #1
Member
 
Join Date: Sep 2012
Location: FL
Posts: 76
Rep Power: 4
victoryv is on a distinguished road
As I wanted to reduce my domain, I performed initial simulations for whole domain and obtained the results/values at certain planes. Then I cut the domain at that planes. I am using density based solver. Earlier the boundary conditions were pressure inlet and pressure outlet. As I wanted to give boundary layer profile at the inlet, I have given velocity inlet boundary condition. AFAIK that velocity inlet BC is not good for density based solver.

1. Is the BC good for density based solver?
2. If not, is there any way to give boundary layer profile at the inlet?

PS: When I use FMG initialization, I was getting NAN.
victoryv is offline   Reply With Quote

Old   June 29, 2013, 14:45
Default
  #2
Member
 
Join Date: Sep 2012
Location: FL
Posts: 76
Rep Power: 4
victoryv is on a distinguished road
Found a solution. One way you can give boundary layer is by giving PROFILES (located on boundary conditions page). You can generate an ASCII file from previous simulation and then use the generated values. For compressible flow, you need to give total pressure, k , ephsilon/omega.
victoryv is offline   Reply With Quote

Reply

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
Velocity inlet within a domain Kevin88 Main CFD Forum 0 December 17, 2012 05:51
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 15:45
Pressure jump on supersonic velocity inlet Viktor FLUENT 0 August 9, 2007 00:23
Pressure Inlet yields wrong velocities Ben FLUENT 0 November 21, 2004 02:47
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 10:29.