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

Two phase euler foam

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 21, 2009, 11:44
Default Hello i am new to OpenFoam an
  #1
New Member
 
Praveen
Join Date: Mar 2009
Location: Goteborg, Sweden
Posts: 8
Rep Power: 8
prabhu is on a distinguished road
Hello
i am new to OpenFoam and learning about two phase Euler foam solver. In the kineticTheoryModel.C, equation and page numbers are specified. Does anyone know which literature it is referred? Also it would be of great if names of some literature of Two-pahse Eulerian simulations are provided.

Thanks in advance
prabhu is offline   Reply With Quote

Old   January 22, 2009, 01:33
Default Hi Praveen, the reference i
  #2
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
Hi Praveen,

the reference is Berend Van Wachem Ph.D. thesis.

Regards,
A.
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto is offline   Reply With Quote

Old   January 22, 2009, 01:41
Default About two-fluid methodology, y
  #3
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
About two-fluid methodology, you might want to read:

H. Enwald, E. Peirano, and A. E. Almstedt. Eulerian two-phase flow theory applied to fluidization. International Journal of Multiphase Flow, 22:21 – 66, 1996.

E. Peirano and B. Leckner. Fundamentals of turbulent gas-solid flows applied to circulating
fluidized bed combustion. Prog. Energy Combust. Sci., 24:259 – 296, 1998.

D. P. Hill. The computer simulation of dispersed two-phase flow. PhD thesis, Imperial
College of Science, Technology and Medicine, London, U.K., 1998. (See www.foamcfd.org to get the PDF).

In the first paper you find the references to quite a bit of useful and interesting papers.

Regards,
A.
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto is offline   Reply With Quote

Old   January 22, 2009, 09:05
Default Thanks a lot for the informati
  #4
New Member
 
Praveen
Join Date: Mar 2009
Location: Goteborg, Sweden
Posts: 8
Rep Power: 8
prabhu is on a distinguished road
Thanks a lot for the information
prabhu is offline   Reply With Quote

Old   January 30, 2009, 12:24
Default Could anyone tell me the role
  #5
New Member
 
Praveen
Join Date: Mar 2009
Location: Goteborg, Sweden
Posts: 8
Rep Power: 8
prabhu is on a distinguished road
Could anyone tell me the role of ppProperties and filterProperties files in the twoPhaseEulerFoam solver.
prabhu is offline   Reply With Quote

Old   July 23, 2014, 12:13
Post twoPhaseEulerFoam
  #6
New Member
 
sd
Join Date: May 2014
Posts: 14
Rep Power: 3
OvGU is on a distinguished road
anybody can tell about this following error-

FOAM FATAL IO ERROR:
size 6000 is not equal to the given value of 19764

file: /home/sayeed/OpenFOAM/sayeed-2.3.0/run/fluidisedBed/0/alpha.particles from line 18 to line 6047.

When Im giving my own mesh file. It shows the above error. Where 6000 comes from (alpha.particles ) and 19764 from (cell/faces )

I never found this problem with other solvers!!!!

little bit hints expectedly appreciate !!!
OvGU is offline   Reply With Quote

Old   July 23, 2014, 17:40
Default
  #7
Senior Member
 
Wouter van der Meer
Join Date: May 2009
Location: Elahuizen, Netherlands
Posts: 131
Rep Power: 8
wouter is on a distinguished road
Hello OvGU,
I have seen this error a lot of times. It happens when you use files in the 0 directory with nonuniform values (an array of values that fit the mesh) and you use another mesh with a different number of cells. For example you have used setFields to change the alphas and you change your mesh(size). That is why there often is a 0.org or alpha.org.
My solution is to delete the 'non' and set a value. then delete all the values in the array up to the next boundary until I only have a file with uniform values.

hope this helps
Wouter
wouter is offline   Reply With Quote

Old   July 24, 2014, 11:47
Post
  #8
New Member
 
sd
Join Date: May 2014
Posts: 14
Rep Power: 3
OvGU is on a distinguished road
Quote:
Originally Posted by wouter View Post
Hello OvGU,
I have seen this error a lot of times. It happens when you use files in the 0 directory with nonuniform values (an array of values that fit the mesh) and you use another mesh with a different number of cells. For example you have used setFields to change the alphas and you change your mesh(size). That is why there often is a 0.org or alpha.org.
My solution is to delete the 'non' and set a value. then delete all the values in the array up to the next boundary until I only have a file with uniform values.

hope this helps
Wouter

Hi Wouter
many many thanks for your quick reply. Anyway it really works but my question is when Im deleting the arrays then how I can get void fraction range in post processing.I set uniform value 1/2/10 but is it really worthy? If you get some time please check once 0 folder I attached here .I am still confused about the BC though I already customized according to my geometry.
Attached Files
File Type: gz 0.tar.gz (2.3 KB, 6 views)
OvGU is offline   Reply With Quote

Old   July 24, 2014, 17:51
Default
  #9
Senior Member
 
Wouter van der Meer
Join Date: May 2009
Location: Elahuizen, Netherlands
Posts: 131
Rep Power: 8
wouter is on a distinguished road
hello OvGU,
The setting of the boundary is only in the 0 directory. After the calculation you must not delete the array because that is what is calculated. Where is allboundary in boundaries comming from? Delete this and than use setfields or funkysetfields to set the internal fields.
An internal field of alpha.air with a value of 10 seems wrong. I think it must be between 0 and 1.
I do not know what solver you use, and cannot help you with this.
wouter 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
Two phase flow - Euler in Fluent MartinP Main CFD Forum 1 November 3, 2006 15:15
Two phase flow - Euler in Fluent MartinP FLUENT 0 November 3, 2006 11:07
Two phase flow bubble foam michael OpenFOAM Running, Solving & CFD 1 August 23, 2006 17:06
Two phase flow bubble foam michael OpenFOAM 1 August 21, 2006 09:16
Stratified and intermittent two-phase flows : VOF vs Euler/Euler Denis Vedrine FLUENT 1 June 28, 2000 12:14


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