This paper presents a time domain procedure for calcualting the Vortex Induced Vibration (VIV) of risers, and compares the computer simulation results with large scale physical test data. The model test data was acquired by the Phase 1 HCR riser JIP. That project conducted large scale model tests of Highly Compliant Rigid Risers in about 800 ft of still water with dynamic vessel heave simulated by a mechanical actuator. Most of the tests exhibited significant intermittent Vortex Induced Vibration (VIV) which impacts in-plane riser response and strength with in-plane drag amplification, and impacts riser fatigue with high frequency VIV bending stress.
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