CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Diverging 3D turbulent internal compressible

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

LinkBack Thread Tools Display Modes
Old   May 24, 2010, 05:08
Question Diverging 3D turbulent internal compressible
New Member
Join Date: Feb 2010
Posts: 24
Rep Power: 9
ChesterP is on a distinguished road
Hi all,

I am studying the flow throught a valve by varying the pressure difference accross it.

I am using the pressure-based solver with the coupled algorithm and first order discretization.

I impose a total pressure at the inlet and a static pressure at the outlet.

For a ratio of inlet pressure to outlet pressure of 1.1 & 1.2 I get converged solutions. When I try to get a solution for a ratio of 1.3, the residuals and variables begin to oscillate.

The maximum mesh skewness is 0.79 and maximum aspect ratio of 16.

Thanks in advance for help.
ChesterP 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
Internal error in compressible flow be density Mirek FLUENT 0 August 20, 2008 08:59
Compressible, turbulent flow in a pressure tube Mario FLUENT 2 August 9, 2005 01:47
bench mark for subsonic compressible turbulent fl javadi Main CFD Forum 0 June 14, 2004 08:40
Flotran problems with compressible turbulent flows Ross Main CFD Forum 1 September 27, 2002 13:08

All times are GMT -4. The time now is 05:14.