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UDF code help solve reaction rate equation palm oil |
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February 13, 2017, 11:34 |
UDF code help solve reaction rate equation palm oil
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New Member
cyril
Join Date: Feb 2017
Posts: 3
Rep Power: 9 |
Hello everyone,
I am trying to write a UDF code to import it into Ansys Fluent. Actually, the reason of writing a UDF code is that there is not in fluent data base palm oil namely Triglycerides for reactants and Alkanes for products. So I have to write a UDF code. Firstly, I have already a udf code (DEFINE_PROPERTY) for chemical properties for each triglycerides, each alkanes and some fatty acids like density, conductivity, specific heat capacity, viscosity ect.. I am here to help me how to write the reaction kinetic rate for each equation. I need to find the rate k1 to k8 reactions. For each reactant and each product, I don't have the concentration. I have found a UDF example but I'd like to know if it's a good example to take for writing a UDF code with my case (palm oil) #include "udf.h" #define K1 2.0e-2 #define K2 5. DEFINE_VR_RATE(vol_reac_rate, c, t, r, mole_weight, species_mf, rate, rr_t) { real s1 = species_mf[0]; real mw1 = mole_weight[0]; if (FLUID_THREAD_P(t) && THREAD_VAR(t).fluid.porous) *rate = K1*s1/pow((1.+K2*s1),2.0)/mw1; else *rate = 0.; *rr_t = *rate; } I have sent in attachment a file with my kinetic equation reaction. Is it possible to use the previous code UDF for my case, otherwise do you have any idea ? Thank you for your help. |
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