The research study examines the vortex-induced fatigue damage of the deepwater steel catenary riser(SCR) in two-degree-of-freedom.For the hydrodynamic loads acting on the structure,the strength of point vortex is used to calculate the fluctuating in-line(IL) and cross-flow(CF) fluid forces.Consequently,a new wake-oscillator model has been deduced to aid in the predicting of the response of the two-degree-of-freedom vortex induced vibration(VIV).The VIV response of deepwater SCR has been calculated numerical...