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Fuel Cunsumption Reduction for KCS Container Vessel Using Hull Vane, with Leading Edge Tubercles

Hamrani Salemi, Hamid Reza | 2022

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 55627 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Sayyadi, Hassan; Hajivand, Ahmad
  7. Abstract:
  8. In the late 1980s, the International Maritime Organization started working on reducing air pollution by ships, and the result was the approval of Annex 6 of MARPOL and its mandatory implementation since 2005. Since then, due to the increasing importance of pollutant emissions in the maritime transport industry and the stricter regulations of the International Maritime Organization and the high cost of fuel for ships, ship owners are looking for ways to reduce fuel consumption. For this purpose, various activities related to reducing the fuel consumption of ships were carried out. Among these, the use of energy saving devices can be a solution. Recently, the hull vane, as a fixed underwater foil installed in the ship stern, has been introduced to the market as an energy saving device, which states that it has the ability to store energy by reducing resistance. In addition, in the past few years, many studies have been conducted in the field of using biomimetic systems for use in a technology. Such as using a protubrrances on the leading edge (tubercle) in hydrofoils or hull vanes. Despite its large size, the humpback whale has good maneuverability compared to other animals of its size, even when chasing prey. And that is because of the presence of tubercles. Therefore, the goal pursued in this thesis is to investigate the effect of the hull vane with and without tubercles on the total resistance coefficient and propeller coefficients in self-propelled mode, as well as to investigate its effect on the total resistance coefficient and the heave and pitch RAO, in regular heading waves. on the other hand After verification, validation and simulations, the results show a 1.77% reduction in the fuel consumption of a ship equipped with a hull vane without tubercles and a 1.85% reduction in fuel consumption of a vessel equipped with a tubercles hull vane in self-propelled mode. give Also, in the case of regular heading waves, the fuel consumption for hull vane without tubercles is 3.979% and for a hull vane with tubercles, 4.043% is reduced. In addition, for the heave and pitch RAO in heading regular waves, for the hull vane without tubercles, they decrease by 11.429% and 11.2%, and for the body blade with tubercle, by 11.66% and 13.025%, respectively
  9. Keywords:
  10. Fuel Consumption Reduction ; Self Propulsion Test ; Regular Heading Waves ; Hull Vane ; Tubercles ; Energy Storage

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