In-Line and Cross-Flow Coupling Vibration Response Characteristics of a Marine Viscoelastic Riser Subjected to Two-Phase Internal Flow

Table 2

Values for physical properties parameters of the marine viscoelastic riser.

Physical properties and parameters	Description	Value
	Riser density (kg/m^3)	7385
	Ocean density (kg/m^3)	1000
	Density of gas-phase internal flow (kg/m^3)	1.293
	Density of fluid-phase internal flow (kg/m^3)	870
U	Cross-flow velocity (m/s)	0.1–0.3
EI	Bending stiffness (N m^2)	0.02
C	Damping coefficient of the riser	0.001
A	Viscoelastic coefficient	0–0.11