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Old   May 30, 2014, 10:05
Default CEL or Fortran Code
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Hana
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Hi All,
It's been quit a while since first I started CFX. I am trying to model population balance of biological systems due to coalescence of species under laminar shear. CFX is only featured with "Prince and Blanch" model which is basically for modeling bubble coalescence in transient flows, and thus is not applicable in my case.
after all I came to this conclusion that I have to write either a CEL or a fortran routine for the suitable model which is as follows:

beta(ij)=(2*k*T/3*mu) *(di+dj)*(1/di+1/dj); di and dj are diameters of colliding particles.

I've already tried to get help from "Help" of Ansys but i didn't get how to write the above expression as a CEL because i don't know how is it possible to define diameters of two colliding particles as di or dj !!
water is as continuous phase and a user-defined polydispersed phase (algae) is as dispersed phase. FYI I am using inhomogeneus MUSIG.

Any help or information is highly appreciated.
tnx in advance
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Old   June 15, 2014, 08:29
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just FYI, the CEL worked well.
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Old   September 16, 2015, 04:24
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Hi Hana-90,

I have been stuck in this problem for almost two weeks. How did you find di and dj using CEL?

Thanks a lot. Looking forward for your reply.
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