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Old   August 4, 2018, 15:55
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Paulina W
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Hello, I am a chemical engineer and I don't have much knowledge on c programming, I wrote some basic udf's for single phase model for nanofluids and it went smoothly. However, I am now trying to hook the density, viscosity, thermal conductivity and heat capaticty functions for the mixture model. So that fluent calculates these values for each cell, can I have some help on how to do it? Fluent UDF manual does not have such example. All my functions include volume fractions of the second phase, as well so it makes it even more complicated.
Sample viscosity function is:
phase1- water, basefluid
phase2-nanoparticles
miu=miu_phase1*(1+39.11*vof_phase2+533.9*vof_phase 2^2)
I did read that DEFINE_ADJUST should be used, however I don't know how to define it later and include volume fraction. I would very much appreciate any help.
Regards,
Paulina
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mixture, nanofluids, udf

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