Research on Bifurcation Response for Vortex-Induced Vibration of Top Tension Riser in Shear Flow

Table 1

Parameters of TTR.

Parameter	Symbol	Values
Elastic modulus	E	210 GPa
Seawater density		1025 kg/m^3
Material density	ρs	7850 kg/m^3
Internal fluid density	ρf	800 kg/m^3
Outer diameter	D	0.325 m
Inner diameter	d	0.305 m
Riser length	L	1000 m
Top tension coefficient	ftop	1.3
Additional mass coefficient	Ca	1.0
Strouhal number	St	0.2
Drag coefficient	CD	1.2