Drag coefficient of tumbling cylinder

[peteobyrne]

Hi,
I am needing to model the projectile motion of 1080 poison pellets which tumble through the air (rough surface, 20mm diameter and 20mm length) and cannot find any information about what the drag coefficient of these are through the air.

Does anybody know where I could find the information. My best guess was to assume it to be a very rough sphere and using Potter and Wiggerts drag coefficient vs Reynolds number graph...

Any help would be greatly appreciated.

Regards

Pete.

 

[btrueblood]

Get a copy of W. F. Hoerner's Fluid Dynamic Drag. Many correlations there for cylinders at various angles of attack.