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

pressure fluctautions on a plate

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 6, 2008, 15:57
Default pressure fluctautions on a plate
  #1
oe
Guest
 
Posts: n/a
I am solving for pressure fluctuations on a plate due a supersonic impinging jet. The plate is at 2 jet diameters and pressure ratio = 1.2 (p_exit/p_ambient = 1.2) and the jet issues from c-d nozzle (Design mach 2.2). I compare the computational results with experimental. The pressure on the plate center seem to be underpredicted and the pressure drops sharply and then rises again to the almost the correct experimental value and falls off then rises again and then levels off. I am using Roe 2nd order upwind-biased flux difference splitting with TVD MINMOD. Does anyone have any ideas why the changes in pressure are not smooth as observed in the experimental results. Is it do with the explicit scheme? Also I use RK time stepping. This is a steady flow case I considered.

Please suggest.

  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
UDF to define or adjust pressure??? engahmed FLUENT 0 July 6, 2010 17:19
pressure BC-natural convection engahmed Main CFD Forum 0 June 16, 2010 11:38
Pressure Condition sidd CD-adapco 0 April 2, 2007 09:31
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Pressure Inlet yields wrong velocities Ben FLUENT 0 November 21, 2004 02:47


All times are GMT -4. The time now is 02:22.