(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.



Fig. 12. The effects of rotation duration ({Delta}{tau}r) on force coefficients. (A) Non-dimensional angular velocity of pitching rotation () and azimuthal rotation (); (B) time courses of lift coefficient (CL) and (C) drag coefficient (CD) in one cycle. Reynolds number (Re)=200, stroke amplitude ({Phi})=150° and mid-stroke angle of attack ({alpha}m)=40°; symmetrical rotation.