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Has anyone determined drag coefficient interms of cross sectional
area for coffee filters
, i.e., c1 and/or c2 in the expressions:
Fdrag = -c1*v and Fdrag = -c2*v*v?
Fowles says that for spheres c1 = 1.55e-1 times diameter and
c2 = 0.22 diameter squared.
I expect these to be incorrect for something shaped like a coffee
filter.