Twisted rudder for reducing fuel-oil consumption
Three twisted rudders fit for large container ships have been developed; 1) the Z-twisted rudder that is an asymmetry type taking into consideration incoming flow angles of the propeller slipstream, 2) the ZB-twisted rudder with a rudder bulb added onto the Z-twisted rudder, and 3) the ZB-F twisted...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-09-01
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| Series: | International Journal of Naval Architecture and Ocean Engineering |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-3/ijnaoe-2013-0207/ijnaoe-2013-0207.xml?format=INT |
| _version_ | 1828429592131534848 |
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| author | Kim Jung-Hun Choi Jung-Eun Choi Bong-Jun Chung Seok-Ho |
| author_facet | Kim Jung-Hun Choi Jung-Eun Choi Bong-Jun Chung Seok-Ho |
| author_sort | Kim Jung-Hun |
| collection | DOAJ |
| description | Three twisted rudders fit for large container ships have been developed; 1) the Z-twisted rudder that is an asymmetry type taking into consideration incoming flow angles of the propeller slipstream, 2) the ZB-twisted rudder with a rudder bulb added onto the Z-twisted rudder, and 3) the ZB-F twisted rudder with a rudder fin attached to the ZB-twisted rudder. The twisted rudders have been designed computationally with the hydrodynamic characteristics in a self-propulsion condition in mind. The governing equation is the Navier-Stokes equations in an unsteady turbulent flow. The turbulence model applied is the Reynolds stress. The calculation was carried out in towing and self-propulsion conditions. The sliding mesh technique was employed to simulate the flow around the propeller. The speed performances of the ship with the twisted rudders were verified through model tests in a towing tank. The twisted versions showed greater performance driven by increased hull efficiency from less thrust deduction fraction and more effective wake fraction and decreased propeller rotating speed |
| first_indexed | 2024-12-10T17:36:31Z |
| format | Article |
| id | doaj.art-6610f193d2904ff8b63f5528a5c66bc3 |
| institution | Directory Open Access Journal |
| issn | 2092-6782 |
| language | English |
| last_indexed | 2024-12-10T17:36:31Z |
| publishDate | 2014-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Naval Architecture and Ocean Engineering |
| spelling | doaj.art-6610f193d2904ff8b63f5528a5c66bc32022-12-22T01:39:31ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822014-09-016371572210.2478/ijnaoe-2013-0207ijnaoe-2013-0207Twisted rudder for reducing fuel-oil consumptionKim Jung-Hun0Choi Jung-Eun1Choi Bong-Jun2Chung Seok-Ho3Hyundai Heavy Industries Co., LTD, Ulsan, KoreaGlobal Core Research Center for Ships and Offshore Plants, Pusan National University, Busan, KoreaHyundai Heavy Industries Co., LTD, Ulsan, KoreaHyundai Heavy Industries Co., LTD, Ulsan, KoreaThree twisted rudders fit for large container ships have been developed; 1) the Z-twisted rudder that is an asymmetry type taking into consideration incoming flow angles of the propeller slipstream, 2) the ZB-twisted rudder with a rudder bulb added onto the Z-twisted rudder, and 3) the ZB-F twisted rudder with a rudder fin attached to the ZB-twisted rudder. The twisted rudders have been designed computationally with the hydrodynamic characteristics in a self-propulsion condition in mind. The governing equation is the Navier-Stokes equations in an unsteady turbulent flow. The turbulence model applied is the Reynolds stress. The calculation was carried out in towing and self-propulsion conditions. The sliding mesh technique was employed to simulate the flow around the propeller. The speed performances of the ship with the twisted rudders were verified through model tests in a towing tank. The twisted versions showed greater performance driven by increased hull efficiency from less thrust deduction fraction and more effective wake fraction and decreased propeller rotating speedhttp://www.degruyter.com/view/j/ijnaoe.2014.6.issue-3/ijnaoe-2013-0207/ijnaoe-2013-0207.xml?format=INTEnergy-saving deviceContainer shipComputational fluid dynamics (CFD)Model testTwisted rudderRudder bulbRudder fin |
| spellingShingle | Kim Jung-Hun Choi Jung-Eun Choi Bong-Jun Chung Seok-Ho Twisted rudder for reducing fuel-oil consumption International Journal of Naval Architecture and Ocean Engineering Energy-saving device Container ship Computational fluid dynamics (CFD) Model test Twisted rudder Rudder bulb Rudder fin |
| title | Twisted rudder for reducing fuel-oil consumption |
| title_full | Twisted rudder for reducing fuel-oil consumption |
| title_fullStr | Twisted rudder for reducing fuel-oil consumption |
| title_full_unstemmed | Twisted rudder for reducing fuel-oil consumption |
| title_short | Twisted rudder for reducing fuel-oil consumption |
| title_sort | twisted rudder for reducing fuel oil consumption |
| topic | Energy-saving device Container ship Computational fluid dynamics (CFD) Model test Twisted rudder Rudder bulb Rudder fin |
| url | http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-3/ijnaoe-2013-0207/ijnaoe-2013-0207.xml?format=INT |
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