Particle Size Distribution (PSD) in fluidization

sangramroy · May 21, 2011, 14:12

Hi,

I am working on simulation of a circulating fluidized bed. Its assumed that the entire batch of solids are of same size (identical dp), though in reality it is not the case. Is it possible to define a particle size distribution (PSD) for such cases? Do I need to define a UDF to mention PSD?

alighaffari · May 22, 2011, 02:40

Hi
you can use Rosin-Rammler distribution model if you are using DPM model in fluent for inlet particles size distribution. you can eighther use UDF if Rosin-Rammler distribution model is not appropriate for your case study.

sangramroy · May 22, 2011, 04:00

Is it possible to implement the said model while using Eulerian-Eulerian approach?

ch3coohminh · November 2, 2011, 05:19

Quote:

Originally Posted by alighaffari

Hi
you can use Rosin-Rammler distribution model if you are using DPM model in fluent for inlet particles size distribution. you can eighther use UDF if Rosin-Rammler distribution model is not appropriate for your case study.

Hi.thanks you so much for suggests.Can you give me UDFS of ROSIN RAMMLER distribution ??

May 21, 2011, 14:12	Particle Size Distribution (PSD) in fluidization	#1
sangramroy New Member Sangram Roy Join Date: Jul 2010 Posts: 18 Rep Power: 9	Hi, I am working on simulation of a circulating fluidized bed. Its assumed that the entire batch of solids are of same size (identical dp), though in reality it is not the case. Is it possible to define a particle size distribution (PSD) for such cases? Do I need to define a UDF to mention PSD?

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May 22, 2011, 02:40		#2
alighaffari Member alighaffari Join Date: May 2011 Posts: 31 Rep Power: 8	Hi you can use Rosin-Rammler distribution model if you are using DPM model in fluent for inlet particles size distribution. you can eighther use UDF if Rosin-Rammler distribution model is not appropriate for your case study.

May 22, 2011, 04:00		#3
sangramroy New Member Sangram Roy Join Date: Jul 2010 Posts: 18 Rep Power: 9	Is it possible to implement the said model while using Eulerian-Eulerian approach?