Hi, I'm looking for the Moment Coefficient (Cm) for a 3D Rotating Cylinder, this means, I there is a free stream of fluid and there is inmerse a cylinder rotating about its own axis , and also rotating about an axis parallel to the free stream. I found in the book of Peter Childs, called Rotating Flow, the Cm for a rotating cylinder with flow parallel to its axis. Well, the first thing that I need and maybe some one helps, is the reference of where can I find the Cm for the rotating cylinder with flow perpendicular to its axis. I hope this exist, but sincerely I did not found it. Then, the final goal is figure out how to calculate the Cm in the 3D situation. Thanks!