How to calculate wind load area?
Dave99 wrote:
Thanks for the help. Actually, I built a monitoring antenna and was
just trying to figure out the basic wind area. So it's not critical or
anything, I was just curious.
Thin rods are kind of tricky.. they have a drag that is much more than
one would expect from their cross-sectional area, depending on the
diameter and wind speed (i.e. the Reynolds number). Cd could be
anywhere from 0.4 to almost 2.0
(this is the aerodynamic curse that afflicts old planes using exposed
wires as structural members)
Dave
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