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How to modify the nucleation rate constant of carbon black in the moss-brooks carbon

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Old   May 14, 2022, 04:38
Default How to modify the nucleation rate constant of carbon black in the moss-brooks carbon
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杜新雨
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Hi, I want to use Fluent to simulate the effect of ethylene dilution by N2 on carbon fume, but the Moss-Brooks model is based on methane study, and parameter correction is needed, what operation is needed to modify the carbon black nucleation rate constant in the Moss-Brooks carbon fume model? Is it programmed with UDF itself to set it? I hope you can give me an answer, thank you!
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Old   February 5, 2024, 12:46
Smile Soot modeling
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Fabio
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Hello!

I also worked a lot with these type of models. You can write UDFs to define nucleation rates for moss-brookes model in Fluent or you can simply type in fleunt terminal
"define/models/soot"
to activate soot model, and from then you can go to
"define/models/soot-parameters"
from here you can press enter and see all the options.
If you type in
"s-m-p" short for "soot-model-parameters" you can modify the constants for the Moss-Brookes model.

If you want to do some calibration for carbon black formation, this can be done by fitting the model with the aid of experimental data or taking a look at the "sticking coefficients" which is a specific coefficient to model soot formation for different fuels, and I imagine that your carbon black formation may come from a heavy fuel, so this may help you try to model it. Search for sticking coefficients in the Fluent Theory Guide, it will supply you with the original paper of this discussion.

Hope this helps.
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