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bubbles diameter: UDF function that defines the particles growth as they move along x |
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#1 |
New Member
fabien tagada
Join Date: Oct 2010
Posts: 5
Rep Power: 15 ![]() |
I try to write an UDF function that defines the particles growth as they move along x axis (nucleation). i'm working with an axisymetric case and an eulerian model, the particles (bubbles) are injected in the x direction.
Ther is two phases, the bubbles are injected in the BC xith the velocity inlet. This UDF doesn't work: #include "udf.h" #define puissance 1./3 DEFINE_PROPERTY(bubble_diameter, c, tc) { real x[ND_ND]; C_CENTROID(x,c,tc); x[1] = P_POS(p)[1]; real cte1; cte1 = (0.015 / 2.0 * 0.7 * 1000.0 * 9.81) * 0.000300; P_DIAM(p) = cte1; return 6 * pow(cte1 * x, puissance); } I need some help, thank you. |
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#2 |
Member
majid kamyab
Join Date: Jul 2014
Posts: 32
Rep Power: 12 ![]() |
what exactly do you mean by not working
are you using population balance model? |
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#3 |
Senior Member
Join Date: Nov 2013
Posts: 1,965
Rep Power: 26 ![]() |
"This UDF doesn't work" is very little information. Be more specific.
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Tags |
diameter, particles, udf inlet boundary |
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