Propeller design procedure for a wind-assisted KVLCC2
Other conference contribution, 2022

Wind-assisted ship propulsion (WASP) has received much attention lately with research focusing on the different sail technologies, ship-hull design optimisation and weather route optimisation. However, the traditional propulsion system is still needed for wind-assisted vessels and is associated with several challenges, related to the wide range of operating conditions and propeller loads due to the varying degree of wind-assistance that will occur. In this study we use an interactive design and optimisation methodology applied on propellers of wind-assisted vessels. The methodology involves handling the complete operating profile of the propeller, an optimisation method for interactive cavitation evaluation by the blade designer, and the use of a new objective, the total energy consumption (TEC) of the expected operation. We use a case study where the KVLCC2 tanker is retrofitted with six Flettner rotor sails, operating between two fixed destinations at constant speed. The purpose is to investigate to what extent a new propeller design can offer a significantly lower TEC when compared to the existing design. Based on the results of this study, approximately 0.9% further reduction in TEC was achieved with the WASP adapted propeller compared to the existing one.

fixed-pitch propeller

interactive optimisation

wind-assisted ship propulsion

total energy consumption

marine propeller design


Ioli Gypa

Chalmers, Mechanics and Maritime Sciences (M2), Marine Technology

Marcus Jansson

Kongsberg Maritime Sweden AB

Robert Gustafsson

Kongsberg Maritime Sweden AB

Sofia Werner

SSPA Sweden AB

Rickard Bensow

Chalmers, Mechanics and Maritime Sciences (M2), Marine Technology

Book of Abstracts of PRADS 2022!

978-953-7738-88-4 (ISBN)

15th International Symposium on Practical Design of Ships and Other Floating Structures
Dubrovnik, Croatia,

SAILPROP – also sailing mechant vessels need an efficient propeller

Swedish Transport Administration, 2020-01-01 -- 2021-12-31.

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