Dynamics of Deepwater Riser: Theory and Method

Preface
Contents
1 Deepwater Riser
	1.1 Introduction
		1.1.1 Developing Mode for Deepwater Oilfield
		1.1.2 Facilities for Deepwater Oil & Gas Development
	1.2 Deepwater Risers
		1.2.1 Top Tensioned Riser
		1.2.2 Catenary Riser
	References
2 Sea Loads
	2.1 Introduction
	2.2 Wave Loads
		2.2.1 Wave Factors
		2.2.2 Regular Wave Theory
		2.2.3 Random Wave Theory
		2.2.4 Wave Force on a Cylinder
	2.3 Current Loads
		2.3.1 Vortex Shedding in Steady Flow
		2.3.2 Vortex Shedding Frequency
		2.3.3 Vortex Induced Force
		2.3.4 Vortex Shedding in an Oscillatory Flow
	References
3 Vibration of Structure
	3.1 Single-Degree-Of-Freedom System
		3.1.1 Dynamical Characteristics
		3.1.2 Free Vibration
		3.1.3 Forced Vibration
	3.2 Multi DOF System
		3.2.1 Dynamic Characteristics
		3.2.2 Forced Vibration
	3.3 Beam Vibration
		3.3.1 Motion Equation
		3.3.2 Frequency and Mode Shape of Simply Supported Beam
		3.3.3 Effect of Tension
		3.3.4 Effect of Large Deflection
		3.3.5 Effect of Elastic Foundation
		3.3.6 Transfer Matrix Method
4 Equation of Riser Vibration
	4.1 Introduction
	4.2 Rigid Riser Equation
		4.2.1 Basic Equation
		4.2.2 Inner Flow Effect
	4.3 Flexible Riser Equation
		4.3.1 Bending Vibration Equation
		4.3.2 Effect of Rigid Oscillation
	References
5 Riser Dynamic Characteristics
	5.1 Introduction
	5.2 Rigid Riser Dynamic Characteristics
		5.2.1 Analytic Method
		5.2.2 Transfer Matrix Method
		5.2.3 Matrix Analysis Method
	5.3 Simple Catenary Riser
		5.3.1 Analytic Method
		5.3.2 Transfer Matrix Method
		5.3.3 Matrix Analysis Method
6 Wave Induced Vibration
	6.1 Introduction
	6.2 Wave Force
		6.2.1 Wave
		6.2.2 Load (API 2009)
		6.2.3 Load Model (API 2009)
		6.2.4 Conditions Affecting Hydrodynamic Loads (API 2009)
	6.3 Analysis Model
		6.3.1 Structural Model
		6.3.2 Boundary Conditions
		6.3.3 System Model
	6.4 Steel Catenary Riser
		6.4.1 Motion Equation
		6.4.2 FEM Mode
		6.4.3 Pipe and Soil Interaction
		6.4.4 Pipe and Soil Interaction Model
		6.4.5 p-y Curve Method for Analyzing Interaction Between Pipe and Soil (Yang 2014)
	6.5 Top Tensioned Riser
		6.5.1 Motion Equation
		6.5.2 Boundary Conditions
		6.5.3 Coupled Analysis
	References
7 Vortex-Induced Vibration
	7.1 Introduction
	7.2 An Isolated Circular Cylinder
		7.2.1 Synchronization and Lock-In
		7.2.2 VIV in Two Degree-Of-Freedom
		7.2.3 Random and Harmonic Vibration
	7.3 Tandem Cylinders
		7.3.1 Wake Pattern
		7.3.2 Vortex Induced Force
		7.3.3 Vibration Features
	7.4 Vortex Induced Force Model
		7.4.1 For Single Riser
		7.4.2 Tandem Risers (Zhou 2017)
	7.5 Steel Caternary Riser
		7.5.1 Rigid Oscillation Equation
		7.5.2 Coupling Motion Equation
	7.6 Top Tensioned Riser
		7.6.1 Motion Equation
		7.6.2 Boundary Condition
		7.6.3 Coupled Analysis
	References