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Improve Ship Propeller Efficiency via Optimum Design of Propeller Boss Cap Fins

Author

Listed:
  • Chungen Yin

    (AAU Energy, Aalborg University, 9220 Aalborg East, Denmark)

  • Christian Kjaer Rosenvinge

    (AAU Energy, Aalborg University, 9220 Aalborg East, Denmark)

  • Marcus Pless Sandland

    (AAU Energy, Aalborg University, 9220 Aalborg East, Denmark)

  • Anders Ehlers

    (Propeller & Aftship R&D Department, MAN PrimeServ, 9900 Frederikshavn, Denmark)

  • Keun Woo Shin

    (Propeller & Aftship R&D Department, MAN PrimeServ, 9900 Frederikshavn, Denmark)

Abstract

This paper aims to cost-effectively improve the energy efficiency of large vessels in shipping by the optimum design of propeller boss cap fins (PBCFs). First, a model propeller of the modern four-blade propeller in a Ro-Ro ship, with no boss cap fin in its original design, is experimentally and numerically investigated. The computational fluid dynamics (CFD) model reproduced all the experiments very well. Then, the CFD model is used to conduct a comprehensive optimum design of PBCFs for the down-scaled propeller. Besides the commonly used rectangular PBCFs, nine airfoils are investigated, due to their favorable lift-to-drag ratio and great potential of being effective PBCFs. The best performing profile, among the 10 shapes, is chosen as the PBCF for further optimization. Finally, the optimum design of the PBCFs for the propeller/rudder system is achieved. It was found to yield remarkable efficiency gains for the modern propeller/rudder system under both design and off-design operation conditions, mainly due to the suppressed hub vortex and partly due to the extra thrust. The yield strength analysis confirmed that the optimum design is feasible in practice and can be used in industrial vessels. The generalized criteria for the optimum design of PBCFs also benefit other propeller/rudder systems for cost-effective energy saving.

Suggested Citation

  • Chungen Yin & Christian Kjaer Rosenvinge & Marcus Pless Sandland & Anders Ehlers & Keun Woo Shin, 2023. "Improve Ship Propeller Efficiency via Optimum Design of Propeller Boss Cap Fins," Energies, MDPI, vol. 16(3), pages 1-17, January.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:3:p:1247-:d:1045239
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    References listed on IDEAS

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    1. Kwang-Il Kim & Keon Myung Lee, 2018. "Dynamic Programming-Based Vessel Speed Adjustment for Energy Saving and Emission Reduction," Energies, MDPI, vol. 11(5), pages 1-15, May.
    2. Jarosław Artyszuk & Paweł Zalewski, 2021. "Energy Savings by Optimization of Thrusters Allocation during Complex Ship Manoeuvres," Energies, MDPI, vol. 14(16), pages 1-19, August.
    3. Tadeusz Szelangiewicz & Tomasz Abramowski & Katarzyna Żelazny & Karol Sugalski, 2021. "Reduction of Resistance, Fuel Consumption and GHG Emission of a Small Fishing Vessel by Adding a Bulbous Bow," Energies, MDPI, vol. 14(7), pages 1-17, March.
    4. Ping-Chen Wu & Chin-Wei Chang & Yu-Chi Huang, 2022. "Design of Energy-Saving Duct for JBC to Reduce Ship Resistance by CFD Method," Energies, MDPI, vol. 15(17), pages 1-21, September.
    5. Mohamad Issa & Adrian Ilinca & Fahed Martini, 2022. "Ship Energy Efficiency and Maritime Sector Initiatives to Reduce Carbon Emissions," Energies, MDPI, vol. 15(21), pages 1-37, October.
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