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Old   November 28, 2005, 10:52
Default DPM diameter mass distribution
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Wouter
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Is would like to use the Rosin-Rammler distribution for a solid cone injection point. I try to check the size-mass distribution from a DPM sample on a plane in the geometry (from the .dpm file that is created). I do this with the diameter-mass flow information in this file. However, I do not find the distribution specified. Instead I get a uniform distribution of mass. Does anybody have suggestions?
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Old   November 28, 2005, 11:04
Default Re: DPM diameter mass distribution
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HS
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Perhaps this thread can shed some light?

http://www.cfd-online.com/Forum/flue...cgi?read=27795

Hope that helps!
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Old   November 28, 2005, 14:21
Default Re: DPM diameter mass distribution
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Wouter
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Thanks HS for pointing me out. This is interesting information, but it appears that this person finally found that the mass distribution did correspond to the R-R distribution (he found the problem for the number distribution). I find the effect both in the number and the mass distribution: both are uniform.

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Old   November 29, 2005, 11:32
Default Re: DPM diameter mass distribution
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Allan Walsh
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Check out the mass flow represented by each diameter.
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Old   November 30, 2005, 03:36
Default Re: DPM diameter mass distribution
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Wouter
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That's what I did - create a .dpm file with diameter and mass flow for each particle. Next, create bins with diameter ranges and calculate the summed mass flow for each bin. This gives me a uniform distribution.
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