近壁面柱体涡激振动的迟滞效应<sup>1)</sup>

近壁面柱体涡激振动的迟滞效应¹⁾

刘俊^*^†,高福平^*^†²⁾(

)

HYSTERESIS IN VORTEX-INDUCED VIBRATIONS OF A NEAR-WALL CYLINDER¹⁾

Liu Jun^*^†,Gao Fuping^*^†²⁾(

)

图10. 涡激振动的上临界和下临界速度随间距比变化

Fig.10. Variation of the upper-critical and the lower-critical reduced velocity for the VIVs of a cylinder with the gap-to-diameter ratio ($D =0.08$m,$m^*=1.85$,$f_{\rm n} =0.57$Hz, $\zeta = 1.10\times 10^{ - 2}$,$K_{\rm s}=3.14\times 10^{ - 2}$,${Re}=O(10^{4})$)