1
مکانیک::
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In which K is a constant value and, depending on the direction of the vortex-induced oscillations, can be equal to 4π or 8π for CF and IL oscillations, respectively.
Using this new parameter and considering the effect of Re, they developed an empirical relation to evaluate the peak amplitude of CF vortex-induced oscillation, that is
This is mainly due to the fact that the amplitude of vortex-induced oscillations in IL direction is much lower than CF oscillations which made it less important and interesting.
Since the fundamental mechanism of two-dimensional VIV is same as that of CF or IL-only VIV described in Section 1, the same parameters must control coupled CF/IL vortex-induced oscillations.
In one of the most influential and pioneering studies on combined CF/IL vortex-induced oscillations, Jauvtis and Williamson [9, 74] and Williamson and Jauvtis [75] investigated the significance of the IL oscillations and their effects on the dynamics of an elastically mounted rigid cylinder.
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