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 prabhu January 21, 2009 11:44

Hello i am new to OpenFoam an

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.

 alberto January 22, 2009 01:33

Hi Praveen, the reference i

Hi Praveen,

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

Regards,
A.

 alberto January 22, 2009 01:41

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

 prabhu January 22, 2009 09:05

Thanks a lot for the informati

Thanks a lot for the information

 prabhu January 30, 2009 12:24

Could anyone tell me the role

Could anyone tell me the role of ppProperties and filterProperties files in the twoPhaseEulerFoam solver.

 OvGU July 23, 2014 12:13

twoPhaseEulerFoam

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 !!!

 wouter July 23, 2014 17:40

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

 OvGU July 24, 2014 11:47

1 Attachment(s)
Quote:
 Originally Posted by wouter (Post 502884) 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.

 wouter July 24, 2014 17:51

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.

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