The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water

Tho Quang Truong, Ping Chen Wu, Kaoru Aoyagi, Kenta Koike, Yu Akiyama, Yasuyuki Toda

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Developing the high efficiency ships is one of the goals that we are heading. The present work is to study the energy saving device, which is a rudder-bulb-fin system, designed for the KVLCC2 tanker. The horizontal fins on the both sides of the rudder bulb share the same foil section, but the suction side faces up on the portside and faces down on the starboard side. The concept is to recover or reduce the energy loss, or gain extra thrust in the propeller rotational flow. The viscous flow simulation was performed by CFDSHIP-Iowa V4.5 with a propeller model. The test condition is at design Froude number 0.142 in calm water for a 3.2m long ship model. The force and flow field were measured in Osaka University towing tank. The propeller rotational rate was determined in EFD (Experimental Fluid Dynamic) self-propulsion test. EFD and CFD (Computational Fluid Dynamic) showed good agreement for rudder flow field and forces for zero degree AOA (angle of attack) for both fins. Furthermore, the AOA combinations from 1 to -2 degree with 1-degree increment for both fins were investigated by CFD only. The best energy saving effect AOA was found; 0 degree for portside fin and -1 degree for starboard side fin. The total resistance was reduced by 2.3% compared with the normal rudder case. Among the cases, its thrust deduction, effective wake and hull efficiency factor were the optimal values.

Original languageEnglish
Title of host publicationProceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
PublisherSociety of Petroleum Engineers
Pages823-830
Number of pages8
ISBN (Electronic)9781880653975
Publication statusPublished - 2017 Jan 1
Event27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
Duration: 2017 Jun 252017 Jun 30

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Other

Other27th International Ocean and Polar Engineering Conference, ISOPE 2017
CountryUnited States
CitySan Francisco
Period17-06-2517-06-30

Fingerprint

Propellers
Angle of attack
Fluid dynamics
Computational fluid dynamics
Ships
Flow fields
Energy conservation
Rotational flow
Ship model tanks
Ship models
Water
Froude number
Flow simulation
Viscous flow
Metal foil
Propulsion
Energy dissipation

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Truong, T. Q., Wu, P. C., Aoyagi, K., Koike, K., Akiyama, Y., & Toda, Y. (2017). The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water. In Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017 (pp. 823-830). (Proceedings of the International Offshore and Polar Engineering Conference). Society of Petroleum Engineers.
Truong, Tho Quang ; Wu, Ping Chen ; Aoyagi, Kaoru ; Koike, Kenta ; Akiyama, Yu ; Toda, Yasuyuki. / The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water. Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017. Society of Petroleum Engineers, 2017. pp. 823-830 (Proceedings of the International Offshore and Polar Engineering Conference).
@inproceedings{9873ec36e566465e8bbcf8d650f9c255,
title = "The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water",
abstract = "Developing the high efficiency ships is one of the goals that we are heading. The present work is to study the energy saving device, which is a rudder-bulb-fin system, designed for the KVLCC2 tanker. The horizontal fins on the both sides of the rudder bulb share the same foil section, but the suction side faces up on the portside and faces down on the starboard side. The concept is to recover or reduce the energy loss, or gain extra thrust in the propeller rotational flow. The viscous flow simulation was performed by CFDSHIP-Iowa V4.5 with a propeller model. The test condition is at design Froude number 0.142 in calm water for a 3.2m long ship model. The force and flow field were measured in Osaka University towing tank. The propeller rotational rate was determined in EFD (Experimental Fluid Dynamic) self-propulsion test. EFD and CFD (Computational Fluid Dynamic) showed good agreement for rudder flow field and forces for zero degree AOA (angle of attack) for both fins. Furthermore, the AOA combinations from 1 to -2 degree with 1-degree increment for both fins were investigated by CFD only. The best energy saving effect AOA was found; 0 degree for portside fin and -1 degree for starboard side fin. The total resistance was reduced by 2.3{\%} compared with the normal rudder case. Among the cases, its thrust deduction, effective wake and hull efficiency factor were the optimal values.",
author = "Truong, {Tho Quang} and Wu, {Ping Chen} and Kaoru Aoyagi and Kenta Koike and Yu Akiyama and Yasuyuki Toda",
year = "2017",
month = "1",
day = "1",
language = "English",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "Society of Petroleum Engineers",
pages = "823--830",
booktitle = "Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017",

}

Truong, TQ, Wu, PC, Aoyagi, K, Koike, K, Akiyama, Y & Toda, Y 2017, The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water. in Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017. Proceedings of the International Offshore and Polar Engineering Conference, Society of Petroleum Engineers, pp. 823-830, 27th International Ocean and Polar Engineering Conference, ISOPE 2017, San Francisco, United States, 17-06-25.

The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water. / Truong, Tho Quang; Wu, Ping Chen; Aoyagi, Kaoru; Koike, Kenta; Akiyama, Yu; Toda, Yasuyuki.

Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017. Society of Petroleum Engineers, 2017. p. 823-830 (Proceedings of the International Offshore and Polar Engineering Conference).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

TY - GEN

T1 - The EFD and CFD study 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 - Aoyagi, Kaoru

AU - Koike, Kenta

AU - Akiyama, Yu

AU - Toda, Yasuyuki

PY - 2017/1/1

Y1 - 2017/1/1

N2 - Developing the high efficiency ships is one of the goals that we are heading. The present work is to study the energy saving device, which is a rudder-bulb-fin system, designed for the KVLCC2 tanker. The horizontal fins on the both sides of the rudder bulb share the same foil section, but the suction side faces up on the portside and faces down on the starboard side. The concept is to recover or reduce the energy loss, or gain extra thrust in the propeller rotational flow. The viscous flow simulation was performed by CFDSHIP-Iowa V4.5 with a propeller model. The test condition is at design Froude number 0.142 in calm water for a 3.2m long ship model. The force and flow field were measured in Osaka University towing tank. The propeller rotational rate was determined in EFD (Experimental Fluid Dynamic) self-propulsion test. EFD and CFD (Computational Fluid Dynamic) showed good agreement for rudder flow field and forces for zero degree AOA (angle of attack) for both fins. Furthermore, the AOA combinations from 1 to -2 degree with 1-degree increment for both fins were investigated by CFD only. The best energy saving effect AOA was found; 0 degree for portside fin and -1 degree for starboard side fin. The total resistance was reduced by 2.3% compared with the normal rudder case. Among the cases, its thrust deduction, effective wake and hull efficiency factor were the optimal values.

AB - Developing the high efficiency ships is one of the goals that we are heading. The present work is to study the energy saving device, which is a rudder-bulb-fin system, designed for the KVLCC2 tanker. The horizontal fins on the both sides of the rudder bulb share the same foil section, but the suction side faces up on the portside and faces down on the starboard side. The concept is to recover or reduce the energy loss, or gain extra thrust in the propeller rotational flow. The viscous flow simulation was performed by CFDSHIP-Iowa V4.5 with a propeller model. The test condition is at design Froude number 0.142 in calm water for a 3.2m long ship model. The force and flow field were measured in Osaka University towing tank. The propeller rotational rate was determined in EFD (Experimental Fluid Dynamic) self-propulsion test. EFD and CFD (Computational Fluid Dynamic) showed good agreement for rudder flow field and forces for zero degree AOA (angle of attack) for both fins. Furthermore, the AOA combinations from 1 to -2 degree with 1-degree increment for both fins were investigated by CFD only. The best energy saving effect AOA was found; 0 degree for portside fin and -1 degree for starboard side fin. The total resistance was reduced by 2.3% compared with the normal rudder case. Among the cases, its thrust deduction, effective wake and hull efficiency factor were the optimal values.

UR - http://www.scopus.com/inward/record.url?scp=85038960821&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85038960821&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:85038960821

T3 - Proceedings of the International Offshore and Polar Engineering Conference

SP - 823

EP - 830

BT - Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017

PB - Society of Petroleum Engineers

ER -

Truong TQ, Wu PC, Aoyagi K, Koike K, Akiyama Y, Toda Y. The EFD and CFD study of rudder-bulb-fin system in ship and propeller wake field of KVLCC2 tanker in calm water. In Proceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017. Society of Petroleum Engineers. 2017. p. 823-830. (Proceedings of the International Offshore and Polar Engineering Conference).