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March 13, 2006, 10:52 
Hello,
Has anyone started t

#1 
Member
Pierre Le Fur
Join Date: Mar 2009
Location: UK
Posts: 60
Rep Power: 9 
Hello,
Has anyone started to implement a population balance model, droplet size moments transport model in Foam? just thought I asked, I am trying to model the breakup of a liquid jet into another liquid with a eulerianeulerian approach. Pierre 

March 13, 2006, 11:12 
hello,
I will add the code of

#2 
Member
olivier Petit
Join Date: Mar 2009
Location: Göteborg, Sweden
Posts: 67
Rep Power: 9 
hello,
I will add the code of population balance which is already written for fluent (UDF). The results with fluent are very good. so when I will add it I will send it on the forum 

March 13, 2006, 11:21 
Cool!

#3 
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Pierre Le Fur
Join Date: Mar 2009
Location: UK
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Cool!


January 5, 2007, 11:09 
Hi there,
I am interested a

#4 
New Member
joao carneiro
Join Date: Mar 2009
Posts: 3
Rep Power: 9 
Hi there,
I am interested at implementing the moments model with the eulerianeulerian approach, solving phase independent tranport equations for the moments of the number size distribution of droplet diameter (for spray applications)... a huge problem in trying to implement this approach in conventional commercial codes is that the moments are actually tranported with the moment average velocities, not the phase velocity, and convective source terms are needed to work around this problem....also rho's and alfa's inside the derivatives are undesirable. Normally, the softwares do not offer this flexibility, that's why I want to try it with Foam... Does anyone have any experience with that ??? Thanks a lot. Joao. 

January 5, 2007, 15:13 
Sounds like fun  indeed, you

#5 
Senior Member
Hrvoje Jasak
Join Date: Mar 2009
Location: London, England
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Sounds like fun  indeed, you can have as many independent flux fields as you like. Have you considered how you are going to make them conservative?
Hrv
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Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk 

January 17, 2007, 05:07 
Thanks for the interest...
Co

#6 
New Member
joao carneiro
Join Date: Mar 2009
Posts: 3
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Thanks for the interest...
Conservative fluxes...hmmm. By conservative you mean the flux leaving a control volume must be equal to the flux entering the direct neighbour control volume ? Maybe I am missing your point here, but by defining our new independent flux as u*phi (and not rho*u*alpha*phi) and integrating over the whole control volume (and not only where, say, phase 1 is present, otherwise we would have "alpha" appearing again), as long as we don't formulate it in a nonconservative way ( d/dx(u*phi) and not u*d/dx(phi)... ) wouldn't be enough ? Or do you think it is better to keep the idea of incorporating every change in the RHS of the equation with some convective source term (I must say I don't like it...)? Again, thanks for your help. Joao. 

November 26, 2012, 04:29 

#7  
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Torino, Italy
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Quote:


March 26, 2014, 03:39 

#8 
Senior Member
Dongyue Li
Join Date: Jun 2012
Location: Torino, Italy
Posts: 742
Rep Power: 9 
Right now Im confused about the breakage process model:
Please see the image attached. 

March 15, 2016, 12:12 

#9  
Member

Quote:
When applying Discrete*Population Balance Model in ANSYS Fluent we have to put predefine boundary conditions values. For Example, phase.. Air.. Bins...7 Ratio Exponent...1.7 Minimum Dia...0.05cm then in boundary conditions... Velocity Inlet...Boundary Values*for setting*are.. Bin0fraction________ * Constant Bin1fraction_________ Constant Bin2fraction_________Constant Bin3fraction_________Constant Bin4fraction_________Constant Bin5fraction_________Constant Bin6fraction_________Constant How to set these values to get appropriate gas distribution ? How to set boundary condition values in Fluent Population Balance model ?  ResearchGate. Available from: https://www.researchgate.net/post/Ho..._Balance_model [accessed Mar 16, 2016]. 

March 19, 2016, 14:46 

#10 
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Vinícius da Costa Ávila
Join Date: Jul 2015
Location: Porto Alegre, Brazil
Posts: 61
Rep Power: 3 
Hello all,
Have anyone ever tried to use PBE with EulerEuler solver and nonNewtonian liquids? I am still trying to understand how to implement nonNewtonian behavior on twoPhaseEulerFoam. Does anyone have any thoughts?
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Vinícius dC.A. 

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