CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Total pressure exceeds inlet value

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

LinkBack Thread Tools Search this Thread Display Modes
Old   September 2, 2008, 08:43
Default Total pressure exceeds inlet value
Posts: n/a
Hi I'm simulating vane row with different pressure ratios, I'm changing outlet pressure from subsonic to fully supersonic flow between the nozzles. I found that in some parts total pressure values are higher than at the inlet, similar total density and temperature. Problem didn't occurs on stagnation locations.

Seems that the mesh is fine, I used SST model, in regions of high total pressure I didn't find over production of turbulece viscosity. Additionally RMS <10-5, Imbalaces close to 0. What could be the reason?
  Reply With Quote

Old   September 9, 2008, 22:02
Default Re: Total pressure exceeds inlet value
Posts: n/a
Momentum exchange of adjacent fluid layers by shearing. i.e. one layer pushes another. I think this can happen locally even though say the mass average should be ok.
  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mass flow inlet and pressure outlet issue nikhil FLUENT 5 December 11, 2013 12:30
Pulsatile pressure inlet with pressure outlet a.lynchy FLUENT 3 March 23, 2012 13:45
Setting dynamic pressure as the inlet BC ruined FLUENT 1 March 26, 2008 05:30
Total pressure and velocity inlet BC ff FLUENT 1 May 28, 2003 21:24
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 15:00

All times are GMT -4. The time now is 02:47.