The Importance of HydrodynamicsLNG Carriers<br />Ewan Baird<br />Cameron DinsdaleJames Duthie<br />
Summary<br />LNG Carriers and Routes<br />Hull Forms<br />Propulsion Systems<br />Propeller and Rudder<br />Marine Coating...
LNG Ships and Routes<br /><ul><li> LNG - Liquefied Natural Gas
Cooled to approximately -160°C (-260°F)
LNG ~ 1/600 volume of Natural Gas, making it practical to transport by ship</li></li></ul><li>Hull Forms<br /><ul><li>Doub...
Majority of new ships under construction are 120,000 m³ to 140,000 m³.
Orders for ships with capacity up to 260,000 m³.
Approximately 300 ships are engaged in deep sea movement of LNG.</li></li></ul><li>Propulsion Systems<br />3 Main Types<br...
Propeller and Rudder<br /><ul><li>Increased Propulsive Efficiency 4-6%
Simple and Robust
Easily retrofitted to existing vessels
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LNG Carrier Presentation

  1. 1. The Importance of HydrodynamicsLNG Carriers<br />Ewan Baird<br />Cameron DinsdaleJames Duthie<br />
  2. 2. Summary<br />LNG Carriers and Routes<br />Hull Forms<br />Propulsion Systems<br />Propeller and Rudder<br />Marine Coatings<br />CFD<br />Future of LNG<br />
  3. 3. LNG Ships and Routes<br /><ul><li> LNG - Liquefied Natural Gas
  4. 4. Cooled to approximately -160°C (-260°F)
  5. 5. LNG ~ 1/600 volume of Natural Gas, making it practical to transport by ship</li></li></ul><li>Hull Forms<br /><ul><li>Double Hull
  6. 6. Majority of new ships under construction are 120,000 m³ to 140,000 m³.
  7. 7. Orders for ships with capacity up to 260,000 m³.
  8. 8. Approximately 300 ships are engaged in deep sea movement of LNG.</li></li></ul><li>Propulsion Systems<br />3 Main Types<br />Slow Speed DieselTwin Screw – Fuelled by Heavy Fuel Oil<br />Medium Speed Dual-Fuel DieselSingle/Twin Screw with diesel/electric drive fuelled by Marine Diesel Oil with boil off or Heavy Fuel Oil<br />Gas TurbinesMainly Twin Screw fuelled by Marine Gas Oil or Gas Fuel<br />
  9. 9. Propeller and Rudder<br /><ul><li>Increased Propulsive Efficiency 4-6%
  10. 10. Simple and Robust
  11. 11. Easily retrofitted to existing vessels
  12. 12. Flexibility for both Single and Twin Screw
  13. 13. Twisted Rudder = Decreased Angle of Attack</li></li></ul><li>PROMAS Integrated Rudder/Propeller<br />Courtesy of <br />
  14. 14. Marine Coatings<br />Specialised Anti-Foul Coating<br />Prevents growth on hull<br />Excess growth on Hull = Higher Skin Resistance<br />Hempel X-3<br />Self Polishing Anti-Foul <br /> 100 Tonnes/Day$600/Tonne MDO<br />
  15. 15. Computational Fluid Dynamics<br />Experimental Analysis toImprove and Optimise Design<br />Higher Efficiency = Lower Fuel Consumption = More Profit<br />Limitless Possibilities of Hull Form using CFD <br />
  16. 16. HARTH LNG Carrier<br /><ul><li>Extremely low drag 
  17. 17. Ultra-ocean stability
  18. 18. Reduced fatigue (no hog or sag)
  19. 19. Design speeds of 60-100 knots
  20. 20. Up to 7 times fuel economy compared to conventional ships</li></ul>Future of LNG?<br />LNG FPSO<br /><ul><li>First delivery 2011
  21. 21. Shell, Petrofac
  22. 22. $680 million Contract Samsung Heavy Industries</li></li></ul><li>Summary<br />LNG Carriers and Routes<br />Hull Forms<br />Propulsion Systems<br />Propeller and Rudder<br />Marine Coatings<br />CFD<br />

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