Droplet Drag (was magnetic lines like these?)

[brian whatcott <inet@intellisys.net>]

At 10:29 5/14/98 CST, Philip Zell wrote:
> ... pressure cooker:  now we're dealing with the liquid form of one
>  particular material (water).  At a given location, two droplets of
>  unequal diameters will experience the same pressure but unequal forces.
>  E.g., if one droplet has twice the diameter of the other, it will
>  experience 4 times the force.  But the larger droplet has 8 times the
>  volume of the smaller droplet, and, therefore, it has 8 times the mass of
>  the smaller droplet.  Therefore, the larger droplet will experience an
>  acceleration that is half that experienced by the smaller droplet.  Looks
>  to me like the smaller one is faster again.
>
>  Philip Zell
>  zell@act.org
Drag for small bodies does not scale linearly with area, as early
aerodynamicists found. Those pesky flying and landing wires of piano wire
provided disproportionate resistance for their size, compared with the drag
 of a larger round strut.
 I believe this does not entirely negate Zell's point.

Brian Whatcott