# In DPM model, with rosin-rammler particle size distribution described problems, thank

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 July 9, 2013, 21:38 In DPM model, with rosin-rammler particle size distribution described problems, thank #1 New Member   yiteng Join Date: Mar 2013 Posts: 2 Rep Power: 0 Hi everybody. I wonder if someone could help me, please In DPM rosin-rammler described using the distribution of particle size, Input minimum diameter,Maximum diameter,average diameter and spread parameter. Where average diameter and spread parameter are based on a formula to help document calculated.(Formula is:Yd=exp(-(d/mean diameter)^n)). Calculation, statistical particle case, as shown: Particle diameter Number of particles 5.0e-06 132 1.3e-05 132 2.1e-05 132 2.9e-05 132 3.7e-05 132 4.5e-05 132 5.3e-05 132 6.1e-05 132 6.9e-05 132 7.7e-05 132 Particles have a diameter of exactly the same situation with the expected, However, the number of particles they are all 132 (This number is adjustable, according to number of tries), Odd number of particles of different size are the same, Serious discrepancies with the expected, What kind of reason? How to solve it? Thank you. yiteng

 July 11, 2013, 22:30 #2 New Member   yiteng Join Date: Mar 2013 Posts: 2 Rep Power: 0 Hi everybody. I wonder if someone could help me, please

 Tags dpm, fluent, rosin-rammler