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January 22, 2017, 17:20 |
Rosin-Rammler
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#1 |
New Member
sanhe
Join Date: Jan 2017
Posts: 2
Rep Power: 0 |
Hi;
I want to simulate spray A of engine combustion network(ecn.sandia.gov). and use Rosin-Rammler distribution.I would like to know how the coefficients must be determined.I would be grateful if someone could help me with this matter. |
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February 6, 2017, 07:03 |
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#2 |
Senior Member
matej forman
Join Date: Mar 2009
Location: Brno, Czech Republic
Posts: 182
Rep Power: 17 |
Hi,
the best answer is: have a look into a source code. You need to find source code files for RosinRammler model which are called: RosinRammler.C and RosinRammler.H. You look at the H file to find out that: //- Distribution minimum 65 scalar minValue_; 66 67 //- Distribution maximum 68 scalar maxValue_; 69 70 // Model coefficients 71 72 scalar d_; 73 scalar n_; follows the eqauation: cumulative model = (1.0 - exp( -(( x - d0)/d)^n ) / (1.0 - exp( -((d1 - d0)/d)^n ) http://www.openfoam.com/documentatio...r.html#details |
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February 11, 2021, 05:24 |
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#3 |
Senior Member
Herpes Free Engineer
Join Date: Sep 2019
Location: The Home Under The Ground with the Lost Boys
Posts: 932
Rep Power: 12 |
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