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

DPM concentration of each fraction

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 24, 2008, 04:52
Default DPM concentration of each fraction
  #1
JFeg
Guest
 
Posts: n/a
Hello. How to dislay DPM concentration of each fraction ? In Fluent exists only concentration of all fractions together. Thanks for advice, JFeg.
  Reply With Quote

Old   September 24, 2008, 12:27
Default Re: DPM concentration of each fraction
  #2
Allan Walsh
Guest
 
Posts: n/a
What are your fractions? If, for example, you have volatiles and char, you can plot the concentrations of these species. Or, you can plot the DPM source terms of each of these components.
  Reply With Quote

Old   September 25, 2008, 03:00
Default Re: DPM concentration of each fraction
  #3
JFeg
Guest
 
Posts: n/a
Sorry, inaccuracy in translation.. I solve a DPM particles with vary diameter (1mm, 0.5mm, etc.). There are no valotaile or char fraction. Contours of "DPM Concentration" displays concentraion of all diametres of particles together. So, how to display DPM Concentration contours of certain diameter (for eample diameter 1mm OR 0.5mm..)? Thanks, JFeg.
  Reply With Quote

Old   September 25, 2008, 13:33
Default Re: DPM concentration of each fraction
  #4
Allan Walsh
Guest
 
Posts: n/a
A couple of options come to mind to do this. You could plot the particle trajectories and color them by particle diameter to see the effect of diameter on their fate.

Or, you could break your particles down into different injections. Each injection would have a certain diameter or diameter range. Once your fluid phase has been solved, run the DPM calculations for each diameter class and then plot out the DPM concentrations.

Probably lots of other ways to do this.
  Reply With Quote

Old   September 26, 2008, 09:57
Default Re: DPM concentration of each fraction
  #5
JFeg
Guest
 
Posts: n/a
Yes, this is a way.

But, what about UDF, is it possible to use ? If yes (I have no experience with UDF) can you remark what to looking for in UDF ? Thanks anyway. JFeg
  Reply With Quote

Old   September 26, 2008, 12:32
Default Re: DPM concentration of each fraction
  #6
Allan Walsh
Guest
 
Posts: n/a
It may be possible to do a UDF. You might want to look at some of the questions and comments on UDFs from users of this site. Based on my experience, you would want to budget about a week to set up your system to run UDFs and learn how they work. Then, probably another week to write and test your UDF.

So, it depends how you want to spend your time.
  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
Volume fraction to mass fraction Torsaki CFX 8 August 21, 2011 00:40
volume fraction,mass fraction,bulk mass flow nick CFX 0 April 25, 2008 09:51
How set volume fraction and species mass fraction Reginaldo Cotto FLUENT 0 August 31, 2006 04:58
volume fraction, Mass fraction and Bulk Mass flow Dr.jones CFX 1 January 25, 2006 04:32
volume fraction to concentration Esther FLUENT 2 August 21, 2005 12:52


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