A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios

The classical wake oscillator model is capable of predicting the vortex-induced vibration response a cylinder at high mass-damping ratios, but it fails to perform satisfactorily low ratios. A modified presented in this paper. modification method involves analyzing variation law add mass coefficient versus reduced velocity and expressing reference lift CL0 as function coefficient. has been demonstrated have better accuracy capturing maximum amplitudes flow However, present form unable accurately predict damping purpose paper propose new idea. In order achieve results when applying idea particular objects, may be necessary first understand these kinds objects.