CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

Large particle problem

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   January 24, 2017, 10:03
Default Large particle problem
  #1
New Member
 
CCB
Join Date: Jan 2017
Location: Scotland
Posts: 2
Rep Power: 0
weeBlueGalaxy is on a distinguished road
Hey
I have been having issues with simulating a simple pseudo 2D fluidized bed, similar to the tutorial cases provided. The solver I am using is twoPhaseEulerFoam on v2.3.x of OpenFOAM.

I am trying to simulate rather large particles (2.5mm) and have found that in my set up they do not fluidize at any velocity, also the results show that the particles have no velocity what so ever. this can be seen in case A.

I then used the original tutorial case (case B) with only changing the following:
u.air inlet uniform 3.5m/s
solid density 2526kg/m^3
particle diameter 2.5mm
Adjustable time step
This resulted in the solid phase to fluidize correctly.

I am having trouble seeing what could be causing the problem between these 2 cases.

Hope you can help
Attached Files
File Type: zip CaseA.zip (25.3 KB, 7 views)
weeBlueGalaxy is offline   Reply With Quote

Old   January 24, 2017, 10:05
Default
  #2
New Member
 
CCB
Join Date: Jan 2017
Location: Scotland
Posts: 2
Rep Power: 0
weeBlueGalaxy is on a distinguished road
sorry forgot Case B
Attached Files
File Type: zip CaseB.zip (20.2 KB, 3 views)
weeBlueGalaxy is offline   Reply With Quote

Reply


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
Particle tracking error alchem OpenFOAM Bugs 5 May 6, 2017 16:30
Problem with porous flow at multi-material interface with large permeability diff. Hisham OpenFOAM Programming & Development 1 June 3, 2016 10:51
forced to sticking of soot particle kmgraju CFX 0 November 27, 2012 09:08
solver stop problem in Lagrangian Particle Tracking sakurabogoda CFX 3 October 5, 2012 06:09
massless particle tracking problem Renold FLUENT 0 January 26, 2011 14:23


All times are GMT -4. The time now is 18:22.