0.0005H 



^ I \ \ 



5 10 15 20 



REDUCED VELOCITY, V^ -V/f^D 



Figure 2.23 Peak cross flow displacement response Y/D (standard deviation of Y) 

 plotted against reduced velocity K^ = ^1 fn^ ^C"' ^ niodel circular cylinder in a tur- 

 bulent boundary layer; from Kwok and Melbourne (38). The structural damping ra- 

 tio Cj of the rigid pivoted model was varied as shown on the figure. The characteris- 

 tic flow velocity K was measured at the tip of the cylinder, of aspect ratio LI D = 9, 

 The figure was provided by Dr. K.C.S. Kwok, University of Sydney, Australia. 



48 



