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

how to calculate volume fraction of particles from

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 23, 2001, 16:12
Default how to calculate volume fraction of particles from
  #1
x. simth
Guest
 
Posts: n/a
Dear Friends,

I have a question. Now I am using Fluent 5 to simulate particle flow in a pipe. The Discrete Phase Modelling is used to simulate the particle traces. Please tell me how I can get particle volume fraction in the pipe out of Fluent 5. Thanks very much for your help.

Sincerely yours, X Smith
  Reply With Quote

Old   April 25, 2001, 08:54
Default Re: how to calculate volume fraction of particles
  #2
eric
Guest
 
Posts: n/a
Hi! You can make /display/contour/dpm/dpm-concentration for a local contour If you want a global value, make /report/average/dpm-concentration

  Reply With Quote

Old   April 26, 2001, 16:40
Default Re: how to calculate volume fraction of particles
  #3
Lanre
Guest
 
Posts: n/a
First, all your particles must exit the computational domain. The DPM model can not be used to give you solids hold-up in a batch process.

Use the Report-->Discrete Phase--> Sample.. (sample planes) to write out a .dpm file. Use Report-->Discrete Phase-->Histogram to read the .dpm file, plot time, get the mean residence time of the particles crossing your outlet boundary.

Volume of particles = mass of DPM flow*residence time/solids density

Volume of fluid zone(s) (from Report-->Volume Integrals)

Solids hold-up = Volume of particles/Volume of fluid zone(s)
  Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
TwoPhaseEulerFoam and Boundary conditions raagh77 OpenFOAM Running, Solving & CFD 99 February 6, 2018 19:31
volume fraction = nan Virtual-iCFD OpenFOAM Running, Solving & CFD 8 June 12, 2015 19:15
volume fraction in mixture model and VOF???? multiphase-flow FLUENT 4 August 7, 2014 11:35
Solving the Volume Fraction Equation in a Multiphase M. Max585 FLUENT 1 March 20, 2012 08:49
On the damBreak4phaseFine cases paean OpenFOAM Running, Solving & CFD 0 November 14, 2008 22:14


All times are GMT -4. The time now is 20:10.