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  • Making Tidal Energy Projects Stick:Lessons learned in the analysis of moorings, anchors, and

    operations at tidal energy sites in the Bay of Fundy

    ICOE Halifax 2014

    Dean Steinke, PEng, MASc

    ICOE Halifax 2014

    Dean Steinke, PEng, MASc

  • Overview

    About DSA and dynamic analysis

    Lessons learned

    Research needs

  • About DSA

    Victoria, BC

    Halifax, NS

    Started 2006 7 technical full-time Formed by Ryan Nicoll /

    Dean Steinke Spin off from UVic

  • What does DSA do?

  • What does DSA do?

    Creates virtual prototypes of marine, offshore and subsea technologies

    High-fidelity numerical simulation and analysis

    dynamic analysis

  • What is dynamic analysis?

    Predicting motions of structures on and below ocean

    Problems are nonlinear Forces dependent on

    motions Motions dependent on

    forces

    Referred to as: Global analysis Coupled analysis Multi-body dynamics

  • DSA Offerings

    Services

    Research and development

    Concept studies

    FEED

    Design assessment

    Operational support

    Detailed analysis and design

    Industries

    Subsea

    Marine renewable energy

    Defence / Naval

    Offshore

    Marine Engineering / Naval Architecture

    Ocean technology

    Aquaculture

  • Applications

    Mooring analysis Risers / pipelines * Marine towing / salvage Towed bodies UUVs / AUVs / ROVs Aquaculture

    Launch and recovery Wave energy devices Tidal energy platform

    design Seakeeping analysis Subsea installation

    analysis

  • Bay of Fundy mooring study and installation analysis

  • ProteusDS Key Capabilities

    Cable / pipeline finite-element model

    Mechanism model

    API / controllers

    6 DOF rigid body model coupled vessel / line hydrodynamics

  • ProteusDS Environmental Modeling

    Spectral wind model

    Regular / Irregular wave models

    JONSWAP, PM, Airy,

    Current modeling

    Linear / nonlinear seabed models

  • Lesson 1: Know your project phases

    Know your project phases

    Feasibility

    Concept study / Pre-FEED

    FEED

    Detailed design

    Dont try to skip steps

    Build slowly

  • Lesson 2: Know your seabed, know your site

  • Lesson 3: Be sensitive

    Check the sensitivity of designs to:

    Wind

    Waves

    Current

    Check your costs

    Conduct failure analysis

  • Lesson 4: Perform simple tests

    Simple tests can reinforce your assumptions

    Not every problem needs to be solved by a PhD dissertation and a million dollar grant

    Build simple models

    Add complexity as it is warranted

  • Lesson 5: Wave loading is important

  • Lesson 6: Work in a team and create lots of drawings

    Operations

    Managers

    Engineers

    Research engineers

    Oceanographers

  • Lesson 7: Know your offshore standards

    Offshore standards arent necessarily too stringent

    Well referenced:

    DNV RP C205 Environmental Conditions and Environmental Loads

    DNV OS E301 Position Mooring

    API RP 2SK Design and Analysis of Stationkeeping Systems for Floating Structures