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

specified density Fluent

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 22, 2011, 08:23
Default specified density Fluent
  #1
New Member
 
Juan
Join Date: Dec 2010
Posts: 17
Rep Power: 6
Tres is on a distinguished road
Hi

I have made a simulation in a vertical pipe including gravity for axis Y (-9.81m/s2). Now I have obtained different static pressure (higher in the point which has less height and lower in the point which has more height). After measure static pressure with fluent when I consider the different height between the 2 points I obtain the same head losses than a horizontal pipe.

In spite of this, I have a question about specified operating density option. When you choose gravity you can choose a specified operating density option. In several tutorial says that you can choose 0 kg/m3 as density but I do not understand why I can not use the density of water. Ihave used velocity inlet and outflow as boundary conditions.

Which is the influence of specified operating density?. If I choose 0 kgm3 I obtain a difference static pressure between 2 points which is not the same as my head losses. On the other hand If I do not choose anything density the difference static pressure is the same as my head losses: Why?

Thanks
Tres 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
Continuing User Defined Real Gas Model issues aeroman FLUENT 5 May 1, 2015 02:57
Variable Density Function ryzd FLUENT 1 August 25, 2011 14:16
Abaqus - Fluent Coupling WITHOUT MPCCI s.mishra FLUENT 0 May 1, 2011 09:45
problem of running parallel Fluent on linux cluster ivanbuz FLUENT 11 March 10, 2010 16:13
density update by UDF in non-premixed combustion IKSOO FLUENT 2 December 8, 2002 21:37


All times are GMT -4. The time now is 21:50.