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Changing devolatilisation Arrhenius parameters via UDF? |
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#1 |
New Member
Join Date: Dec 2019
Posts: 29
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Hi all,
I am currently wondering about how I can change the Arrhenius parameters of the devolatilisation of a particle based on the particle diameter. I don't really want to re-write the whole devolatilisation law with mass and energy balances, since that seems like overkill. The pseudo-code looks like this: /******* UDF that models custom Arrhenius parameters for each particle **************/ #include "udf.h" DEFINE_DPM_LAW(variable_Arrhenius, p, ci){ if (0 < P_DIAM(p) < 100) A = 1; E = 100; else if ( 100 < P_DIAM(p) < 500) A = 2; E = 200; else A = 3; E = 300; VaporizationLaw(p); } But I can not seem to find a way to edit A and E? Any help would be appreciated. Cheers! |
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#2 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
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share your case, I'll try to find something
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#3 |
New Member
Join Date: Dec 2019
Posts: 29
Rep Power: 6 ![]() |
Hey Alexander, thanks for the quick reply. I am not able to share the real case, but in general it's just a simple tube with a particle injection at one end. I have a representative simplified case at hand, however I seem not to be able to upload it here due to file restrictions. The geometry and injections are irrelevant though, and the problem can be found in any combustion case.
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#4 |
Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 ![]() ![]() |
I dont know how to set up this problem correctly. No experience, cant help you without case
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Tags |
arrhenius, devolatilisation, udf |
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