CFD Online Logo CFD Online URL
Home > Forums > FLUENT

5 kind of pressures

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

LinkBack Thread Tools Display Modes
Old   July 9, 2001, 05:49
Default 5 kind of pressures
Posts: n/a
Hi, everybody. Who can explain the 5 kind of pressuresperating pressure,gauge pressure,static pressure,stagnation pressure and total pressure,which always confuse me. I'm simulating the flow field in a firebox,c3h8+5o2---3co2+4h2o.The inlet pressure of c3h8 is 0.4MPa,0.5MPa for o2. Now, how to set the pressure boundary conditions? In the pressure inlet dialog box,how to set "Gauge Total Pressure" and "Supersonic /Initial Gauge Pressure"? And what's connection of those pressures with the operating pressure? Thanks very much. Kay
  Reply With Quote

Old   July 9, 2001, 06:38
Default Re: 5 kind of pressures
John C. Chien
Posts: n/a
(1). I had the same problem before. (2). It is important to follow the tutorial sample to set these pressures, especially Fluent has more than one solver module. (2). There are absolute static pressure, absolute total pressure (or stagnation pressure). The total pressure is a derived variable. (3). If it is not absolute, then it can be gauge pressure or operating pressure. And you have to know the definition used in the particular solver.
  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
Soil and Internal Water Pressures mattyg88 ANSYS 1 March 13, 2010 12:45
3-D Water Flow in Fluent to Evaluate Pressures ahammack FLUENT 2 September 1, 2009 22:41
Negative pressures in the flow domain mahut FLUENT 2 September 27, 2007 05:07
Which kind of pressure use calculating Drag? Fer Main CFD Forum 5 January 27, 2006 13:32
Guage vs. Absolute pressures in Fluent. Riaan FLUENT 1 January 21, 2005 15:22

All times are GMT -4. The time now is 12:31.