An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades
In this study, an experimental investigation has been made of the applicability of outer-layer vertical blades to real ship model. After first devised by Hutchins and Choi (2003), the outer-layer vertical blades demonstrated its effectiveness in reducing total drag of flat plate (Park et al., 2011)...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2014-03-01
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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-1/ijnaoe-2013-0169/ijnaoe-2013-0169.xml?format=INT |
| _version_ | 1830231868173189120 |
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| author | An Nam Hyun Ryu Sang Hoon Chun Ho Hwan Lee Inwon |
| author_facet | An Nam Hyun Ryu Sang Hoon Chun Ho Hwan Lee Inwon |
| author_sort | An Nam Hyun |
| collection | DOAJ |
| description | In this study, an experimental investigation has been made of the applicability of outer-layer vertical blades to real ship model. After first devised by Hutchins and Choi (2003), the outer-layer vertical blades demonstrated its effectiveness in reducing total drag of flat plate (Park et al., 2011) with maximum drag reduction of 9.6%. With a view to assessing the effect in the flow around a ship, the arrays of outer-layer vertical blades have been installed onto the side bottom and flat bottom of a 300k KVLCC model. A series of towing tank test has been carried out to investigate resistance (CTM) reduction efficiency and improvement of stern wake distribution with varying geometric parameters of the blades array. The installation of vertical blades led to the CTM reduction of 2.15~2.76% near the service speed. The nominal wake fraction was affected marginally by the blades array and the axial velocity distribution tended to be more uniform by the blades array. |
| first_indexed | 2024-12-18T11:24:20Z |
| format | Article |
| id | doaj.art-e082fb0e184f45ec9be347e90e0978ed |
| institution | Directory Open Access Journal |
| issn | 2092-6782 |
| language | English |
| last_indexed | 2024-12-18T11:24:20Z |
| publishDate | 2014-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Naval Architecture and Ocean Engineering |
| spelling | doaj.art-e082fb0e184f45ec9be347e90e0978ed2022-12-21T21:09:45ZengElsevierInternational Journal of Naval Architecture and Ocean Engineering2092-67822014-03-016115116110.2478/ijnaoe-2013-0169ijnaoe-2013-0169An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical bladesAn Nam Hyun0Ryu Sang Hoon1Chun Ho Hwan2Lee Inwon3Department of Shipbuilding and Marine Engineering, Koje College, Gyeongnam, KoreaFlutek Ltd., Gyeongnam, KoreaGlobal Core Research Center for Ships Global Core Research Center for Ships In this study, an experimental investigation has been made of the applicability of outer-layer vertical blades to real ship model. After first devised by Hutchins and Choi (2003), the outer-layer vertical blades demonstrated its effectiveness in reducing total drag of flat plate (Park et al., 2011) with maximum drag reduction of 9.6%. With a view to assessing the effect in the flow around a ship, the arrays of outer-layer vertical blades have been installed onto the side bottom and flat bottom of a 300k KVLCC model. A series of towing tank test has been carried out to investigate resistance (CTM) reduction efficiency and improvement of stern wake distribution with varying geometric parameters of the blades array. The installation of vertical blades led to the CTM reduction of 2.15~2.76% near the service speed. The nominal wake fraction was affected marginally by the blades array and the axial velocity distribution tended to be more uniform by the blades array.http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-1/ijnaoe-2013-0169/ijnaoe-2013-0169.xml?format=INTEnergy efficient shipSkin frictional drag reductionOuter-layer vertical bladesEffective powerTur-bulent boundary layerWake |
| spellingShingle | An Nam Hyun Ryu Sang Hoon Chun Ho Hwan Lee Inwon An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades International Journal of Naval Architecture and Ocean Engineering Energy efficient ship Skin frictional drag reduction Outer-layer vertical blades Effective power Tur-bulent boundary layer Wake |
| title | An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades |
| title_full | An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades |
| title_fullStr | An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades |
| title_full_unstemmed | An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades |
| title_short | An experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer-layer vertical blades |
| title_sort | experimental assessment of resistance reduction and wake modification of a kvlcc model by using outer layer vertical blades |
| topic | Energy efficient ship Skin frictional drag reduction Outer-layer vertical blades Effective power Tur-bulent boundary layer Wake |
| url | http://www.degruyter.com/view/j/ijnaoe.2014.6.issue-1/ijnaoe-2013-0169/ijnaoe-2013-0169.xml?format=INT |
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