Creeping Flow Past a Sphere
Oseen Drag for a Cylinder
The creeping flow equation does not accept a solution for flow
over a cylinder. The Oseen approximation, however, converges and leads to
the following expression for the drag coefficient for a cylinder:
Here
Empirical Formula
For larger Reynolds number, the following empirical equations for
spherical and cylindrical particles may be used:
Drag on a Droplet
The expression for the drag action on a droplet in Stokes flow region is given by
where |