Numerical and Experimental Research on the Effect of Platform Heave Motion on Vortex-Induced Vibration of Deep Sea Top-Tensioned Riser

Figure 14

Frequency spectrum of TTR: (a) U = 0.3 m/s, T = 100 N, and △T = 30 N; (b) U = 0.3 m/s, T = 100 N, and △T = 20 N; (c) U = 0.5 m/s, T = 100 N, and △T = 30 N; (d) U = 0.5 m/s, T = 100 N, and △T = 20 N.

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