TY - GEN
T1 - Improvement of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water
AU - Truong, Tho Quang
AU - Wu, Ping Chen
AU - Kishi, Junichiro
AU - Toda, Yasuyuki
N1 - Funding Information:
This research was partially supported by U.S. ONR Global NICOP grant N62909-16-1-2015 and the first author research was supported by MEXT scholarship.
Publisher Copyright:
Copyright © 2018 by the International Society of Offshore and Polar Engineers (ISOPE)
PY - 2018
Y1 - 2018
N2 - In this paper, we present a study on the energy-saving devices which is probably called Rudder-Bulb-Fin systems, designed for KVLCC2 tanker. The addition of horizontal fins which is installed on rudder for both sides can significantly reduce drag force in some applications. Several simulating cases of fin such as adjusting the angle of attack of fins, twisted fin, location of fins on rudder or even cutting starboard side fin have been designed and simulated using CFDSHIP-Iowa V4.5 code. The simulation results for those cases are validated by experiment; which are conducted in towing tank of Osaka University with fully loaded conditions at Froude number of 0.142. The flow field is measured in calm water using stereo particle image velocimetry at the downstream. The CFD and experimental fluid dynamics results showed a good agreement with the same test conditions. The total resistance by this design could be reduced a significant percentage amount and improved the propulsive efficiency by comparing with previous designs.
AB - In this paper, we present a study on the energy-saving devices which is probably called Rudder-Bulb-Fin systems, designed for KVLCC2 tanker. The addition of horizontal fins which is installed on rudder for both sides can significantly reduce drag force in some applications. Several simulating cases of fin such as adjusting the angle of attack of fins, twisted fin, location of fins on rudder or even cutting starboard side fin have been designed and simulated using CFDSHIP-Iowa V4.5 code. The simulation results for those cases are validated by experiment; which are conducted in towing tank of Osaka University with fully loaded conditions at Froude number of 0.142. The flow field is measured in calm water using stereo particle image velocimetry at the downstream. The CFD and experimental fluid dynamics results showed a good agreement with the same test conditions. The total resistance by this design could be reduced a significant percentage amount and improved the propulsive efficiency by comparing with previous designs.
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M3 - Conference contribution
AN - SCOPUS:85053476185
SN - 9781880653876
T3 - Proceedings of the International Offshore and Polar Engineering Conference
SP - 184
EP - 190
BT - Proceedings of the 28th International Ocean and Polar Engineering Conference, ISOPE 2018
PB - International Society of Offshore and Polar Engineers
T2 - 28th International Ocean and Polar Engineering Conference, ISOPE 2018
Y2 - 10 June 2018 through 15 June 2018
ER -