Mooring System Design, Evaluation, and Reliability Assessment for Floating Offshore Wind Turbine Installation

Course ID:  M51015EP

Credits: 3

Objective: 

1. Be able to use AQWA and Orcaflex software for integrated hydrodynamic and structural dynamic analysis 

2. Be able to design and evaluate mooring system for floating offshore wind turbine installation 

3. Be able to familiarize the reliability theory and assessment techniques on the application of mooring chain

Course Prerequisites: 

1. Hydrodynamics 

2. Structure dynamics 

3. Stochastic processing 

4. Fracture mechanics

Outline:

Section 1: Introduction to offshore floating wind turbine installation 

1) Types of offshore floating wind turbine installations 

2) Introduction of mooring system for floating offshore structures 

3) Introduction of soil and foundation/anchor structure inter-action 

Section 2: Classification codes for the design of mooring system for offshore structures 

1) Design considerations 

2) Mooring system type 

3) Mooring line material properties 

4) acceptance criteria 

Section 3: Hydrodynamics and motion analyses in ANSYS/AQWA 

1) Introduction of ANSYS/AQWA suites 

2) Generate AQWA model with mooring line 

3) Input environment load 

4) Perform hydrodynamic loads and motions analysis 

Section 4: integrated hydrodynamic and structure dynamic analysis in Orcaflex 

1) Introduction of ANSYS/AQWA suites 

2) Generate Orcaflex model with wind turbine and mooring line 

3) Input environment load 

4) Perform integrated hydrodynamic and structure dynamic analysis 

5) Perform mooring system design evaluation 

Section 5:Mooring Line Reliability Assessment

1) Reliability Theory

2) Mooring Line Reliability Assessment Techniques

3) Risk-Based Mooring Line Inspection Assessment Techniques"

Teaching Method: 

1) Class lecture using power point presentation 

2) Run example analysis 

3) Group discussion

Reference: 

1. Marine Hydrodynamics, Newman 

2. Mooring System Engineering for Offshore Structures, Kai-Tung Ma 

3. ANSY/AQWA user manuals 

4. Orcaflex user manual