|March 4, 2015, 12:00||
SOS.udf inlet parabolic velocity for aerodynamic analysis
How can i create udf for a wind tunnel simulation in architecture using LES model. The parameters are:
H=320m (wind tunnel height in y direction)
h(building)=200m (building height in the wind tunnel (y direction))
Wind Profile (x_velocity) calculation is:
v2=v1 * (ln[h2/0.8]) / (ln[h1/0.8))
The reference wind speed v1 is measured at height h1. v2 is the wind speed at height h2.
Considering v1=1m/s in h1=1m
what is the problem of this udf.
DEFINE_PROFILE(inlet_x_velocity, thread, position)
y = x;
F_PROFILE(f, thread, position) = (log10(y/0.8))/(0.223143);
|March 4, 2015, 12:05||
Join Date: Nov 2013
Posts: 771Rep Power: 11
But even without that information, I guess some unexpected results can be caused by the fact that you don't tell Fluent what x should be. For me it is clear that you mean x to be the position of cell f, but the compiler cannot guess that.
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