Abstract： A new high resolution approach based on spectral element method is proposed to analyse the complex global stability for the non-parallel flow passing a rotating and translating circular cylinder. The studies presented here predict the variation of Strouhal number St as the spin parameter α increases from 0.0 to 1.4, for the Reynolds number Re=60. The direct numerical simulation shows a small increase of vortex shedding frequency at α<1.1, and a slight decrease as α approaches the critical spin parameter α=1.37. The trend of variation of eigen-frequency with α obtained by linear stability analysis is opposite to those obtained by direct numerical simulation for Re=60, although they achieve the same frequency at the onset of vortex shedding.
MA Dong-Jun;SUN De-Jun;YIN Xie-Yuan. A Global Stability Analysis of the Wake behind a Rotating Circular Cylinder[J]. 中国物理快报, 2005, 22(8): 1964-1967.
MA Dong-Jun, SUN De-Jun, YIN Xie-Yuan. A Global Stability Analysis of the Wake behind a Rotating Circular Cylinder. Chin. Phys. Lett., 2005, 22(8): 1964-1967.
2005, Vol. 22 
