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Population balance for airlift reactor (FLUENT)

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Old   April 6, 2009, 06:51
Arrow Population balance for airlift reactor (FLUENT)
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amira maizi
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hi everybody,
I am working on a simulation of an external airlift reactor, and to follow the bubble diameter distribution, I always find this expression: " The
bubble size distribution is predicted using a Population Balance (PB) model"
So, pls how to use a population balance model,? is there an algorithm?
does it mean an UDF??
thx for help
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Old   October 31, 2009, 08:54
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Mostafa Moghaddami
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Hi amira;
I saw your message accidentally and I decided to answer your question despite it is too late for replying and probably you have found the answer. Anyway I hope it helps.
Population balance model in Fluent is a model for multiphase flows. By default this model is not visible in the drop down list of “Models” panel. You should activate it by typing this command “define models addon-module” in the Fluent and then choosing 5 to enable the population balance model.

The following link contains complete description of this model in Fluent.
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