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-   -   Population balance for airlift reactor (http://www.cfd-online.com/Forums/fluent/63346-population-balance-airlift-reactor.html)

amira April 6, 2009 07:03

Population balance for airlift reactor
 
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

amira April 6, 2009 07:10

pls let me know how to enter a population balance model...
I need to follow the bubble diameter distribution, I know it depends on bubble coalescence and break ups, but I don't know how to enter it...

other thing, in some articles, they are talking aboiut n discrete bubble sizes class... how and where can we enter this parameter??
thx

moh1367 January 28, 2010 03:04

Hi
 
I new to this forum and I dont know why others didnt answer ti your question.
You can add pop-balance as an extra module in just 6.3.26 version:
You must type :
define/models/addon-module
then you select pop-balance by choosing number 5.


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