CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Fluent UDF and Scheme Programming

How to define Particle with UDF?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 14, 2010, 08:57
Default How to define Particle with UDF?
  #1
Senior Member
 
sega's Avatar
 
Sebastian Gatzka
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729
Rep Power: 10
sega is on a distinguished road
Hello World.

I'm using the Discrete Phase Model for the simulation of coal combustion.

Can anyone tell me how I can define a particle which contains different components with an UDF?


I have toyed around with "number of scalars" in the FLUENT GUI, but it leads to nothing, at this time.

So, how can I set up different scalars containing the concentration of each component, which will form my particle?

Have a nice day.
Sebastian
__________________
Schrödingers wife: "What did you do to the cat? It's half dead!"
sega is offline   Reply With Quote

Old   January 18, 2010, 07:23
Default
  #2
Senior Member
 
Bernhard
Join Date: Sep 2009
Location: Delft
Posts: 787
Rep Power: 12
Bernhard is on a distinguished road
Maybe you can use P_USER_REAL(particle, i) to define any scalar you like for each particle?
Bernhard is offline   Reply With Quote

Old   January 19, 2010, 03:43
Default
  #3
Senior Member
 
sega's Avatar
 
Sebastian Gatzka
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729
Rep Power: 10
sega is on a distinguished road
Quote:
Originally Posted by Bernhard View Post
Maybe you can use P_USER_REAL(particle, i) to define any scalar you like for each particle?
Which can be mass species as well?
Basically anything I can think of?!
__________________
Schrödingers wife: "What did you do to the cat? It's half dead!"
sega is offline   Reply With Quote

Old   January 20, 2010, 04:50
Default
  #4
Senior Member
 
Bernhard
Join Date: Sep 2009
Location: Delft
Posts: 787
Rep Power: 12
Bernhard is on a distinguished road
Well, for things like mass are already defined via standard properties, you don't need your own variable for that. For just sperical particles, the combination of diameter and density is sufficient, you can use P_DIAM and P_DENSITY or something for that.
Bernhard is offline   Reply With Quote

Reply

Tags
discrete phase model, dpm, udf

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
HELP----Surface Reaction UDF Ashi Fluent UDF and Scheme Programming 0 May 25, 2009 09:39
DPM UDF particle position using the macro P_POS(p)[i] dm2747 FLUENT 0 April 17, 2009 01:29
Missing math.h header Travis FLUENT 4 January 15, 2009 11:48
Free surface boudary conditions with SOLA-VOF Fan Main CFD Forum 10 September 9, 2006 12:24
UDF FOR UNSTEADY TIME STEP mayur FLUENT 3 August 9, 2006 10:19


All times are GMT -4. The time now is 21:29.