Resistance Analysis of a Semi-SWATH Design Concept in Shallow Water
Resistance analysis is an important analytical method used to evaluate the hydrodynamic performance of High Speed Craft (HSC). Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in res...
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| Veröffentlicht in: | Journal of marine science and application 2017-06, Vol.16 (2), p.182-189 |
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| creator | Arifah Ali Maimun, Adi Ahmed, Yasser M Rahimuddin |
| description | Resistance analysis is an important analytical method used to evaluate the hydrodynamic performance of High Speed Craft (HSC). Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in resistance because of changes in pressure distribution and wave pattern. In this paper, the shallow water performance of an HSC design concept, the semi-Small Waterplane Area Twin Hull (semi-SWATH) form, is studied. The hull is installed with fin stabilizers to reduce dynamic motion effects, and the resistance components of the hull, hull trim condition, and maximum wave amplitude around the hull are determined via calm water resistance tests in shallow water. These criteria are important in analyzing semi-SWATH resistance in shallow water and its relation to flow around hull. The fore fin angle is fixed to zero degrees, while the aft fin angle is varied to 0o, 5o, 10o, and 15o. For each configuration, investigations are conducted with depth Froude numbers (FrH) ranging from 0.65 to 1.2, and the resistance tests are performed in shallow water at the towing tank of UTM. Analysis results indicate that the resistance, wave pattern, and trim of the semi-SWATH hull form are affected by the fin angle. The resistance is amplified whereas the trim and sinkage are reduced as the fin angle increases. Increases in fin angle contribute to seakeeping and stability but affect the hull resistance of HSCs. |
| doi_str_mv | 10.1007/s11804-017-1406-x |
| format | Article |
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Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in resistance because of changes in pressure distribution and wave pattern. In this paper, the shallow water performance of an HSC design concept, the semi-Small Waterplane Area Twin Hull (semi-SWATH) form, is studied. The hull is installed with fin stabilizers to reduce dynamic motion effects, and the resistance components of the hull, hull trim condition, and maximum wave amplitude around the hull are determined via calm water resistance tests in shallow water. These criteria are important in analyzing semi-SWATH resistance in shallow water and its relation to flow around hull. The fore fin angle is fixed to zero degrees, while the aft fin angle is varied to 0o, 5o, 10o, and 15o. For each configuration, investigations are conducted with depth Froude numbers (FrH) ranging from 0.65 to 1.2, and the resistance tests are performed in shallow water at the towing tank of UTM. Analysis results indicate that the resistance, wave pattern, and trim of the semi-SWATH hull form are affected by the fin angle. The resistance is amplified whereas the trim and sinkage are reduced as the fin angle increases. Increases in fin angle contribute to seakeeping and stability but affect the hull resistance of HSCs.</description><identifier>ISSN: 1671-9433</identifier><identifier>EISSN: 1993-5048</identifier><identifier>DOI: 10.1007/s11804-017-1406-x</identifier><language>eng</language><publisher>Harbin: Harbin Engineering University</publisher><subject>Electrical Machines and Networks ; Engineering ; Evaluation ; Geotechnical Engineering & Applied Earth Sciences ; height;semi-SWATH;shallow ; Hydrodynamics ; Machinery and Machine Elements ; Motion effects ; Motional resistance ; Offshore Engineering ; Power Electronics ; Pressure distribution ; resistance;wave ; Sea keeping ; Shallow water ; Ship motion ; Ships ; Stability ; Stabilizers ; Stress concentration ; SWATH (ship) ; Towing ; Towing tanks ; Water resistance ; water;fin ; Wave amplitude ; Wave resistance</subject><ispartof>Journal of marine science and application, 2017-06, Vol.16 (2), p.182-189</ispartof><rights>Harbin Engineering University and Springer-Verlag Berlin Heidelberg 2017</rights><rights>Copyright Springer Science & Business Media 2017</rights><rights>Copyright © Wanfang Data Co. Ltd. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c381t-4d02cd0004eddd109f3be6cacb462acf15246432136d7a09309a40af35b4f3c73</citedby><cites>FETCH-LOGICAL-c381t-4d02cd0004eddd109f3be6cacb462acf15246432136d7a09309a40af35b4f3c73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/86145A/86145A.jpg</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1007/s11804-017-1406-x$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1007/s11804-017-1406-x$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Arifah Ali</creatorcontrib><creatorcontrib>Maimun, Adi</creatorcontrib><creatorcontrib>Ahmed, Yasser M</creatorcontrib><creatorcontrib>Rahimuddin</creatorcontrib><title>Resistance Analysis of a Semi-SWATH Design Concept in Shallow Water</title><title>Journal of marine science and application</title><addtitle>J. Marine. Sci. Appl</addtitle><addtitle>Journal of Marine Science and Application</addtitle><description>Resistance analysis is an important analytical method used to evaluate the hydrodynamic performance of High Speed Craft (HSC). Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in resistance because of changes in pressure distribution and wave pattern. In this paper, the shallow water performance of an HSC design concept, the semi-Small Waterplane Area Twin Hull (semi-SWATH) form, is studied. The hull is installed with fin stabilizers to reduce dynamic motion effects, and the resistance components of the hull, hull trim condition, and maximum wave amplitude around the hull are determined via calm water resistance tests in shallow water. These criteria are important in analyzing semi-SWATH resistance in shallow water and its relation to flow around hull. The fore fin angle is fixed to zero degrees, while the aft fin angle is varied to 0o, 5o, 10o, and 15o. For each configuration, investigations are conducted with depth Froude numbers (FrH) ranging from 0.65 to 1.2, and the resistance tests are performed in shallow water at the towing tank of UTM. Analysis results indicate that the resistance, wave pattern, and trim of the semi-SWATH hull form are affected by the fin angle. The resistance is amplified whereas the trim and sinkage are reduced as the fin angle increases. Increases in fin angle contribute to seakeeping and stability but affect the hull resistance of HSCs.</description><subject>Electrical Machines and Networks</subject><subject>Engineering</subject><subject>Evaluation</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>height;semi-SWATH;shallow</subject><subject>Hydrodynamics</subject><subject>Machinery and Machine Elements</subject><subject>Motion effects</subject><subject>Motional resistance</subject><subject>Offshore Engineering</subject><subject>Power Electronics</subject><subject>Pressure distribution</subject><subject>resistance;wave</subject><subject>Sea keeping</subject><subject>Shallow water</subject><subject>Ship motion</subject><subject>Ships</subject><subject>Stability</subject><subject>Stabilizers</subject><subject>Stress concentration</subject><subject>SWATH (ship)</subject><subject>Towing</subject><subject>Towing tanks</subject><subject>Water resistance</subject><subject>water;fin</subject><subject>Wave amplitude</subject><subject>Wave resistance</subject><issn>1671-9433</issn><issn>1993-5048</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNp9kF1LwzAUhosoOKc_wLuAt0bPadKPXI76MWEguMkuQ5qmXUfXbk1l3b83o0O98ion8LzvOTyed4vwgADRo0WMgVPAiCKHkPZn3giFYDQAHp-7OYyQCs7YpXdl7RogjELGRl7yYWxpO1VrQya1qg7uR5qcKDI3m5LOl5PFlDw5pqhJ0jhq25GyJvOVqqpmT5aqM-21d5Grypqb0zv2Pl-eF8mUzt5f35LJjGoWY0d5Br7OAICbLMsQRM5SE2qlUx76SucY-DzkzEcWZpECwUAoDipnQcpzpiM29u6H3r2qc1UXct18te5mK1cmLXTW96k0vlMAvlPi8LsB37bN7svY7pfHWAQBQACBo3CgdNtY25pcbttyo9qDRJBHtXJQK12vPKqVvcv4Q8Y6ti5M-6f5n9DpHL1q6mLncj-bIicFBUMm2DfbPIWW</recordid><startdate>20170601</startdate><enddate>20170601</enddate><creator>Arifah Ali</creator><creator>Maimun, Adi</creator><creator>Ahmed, Yasser M</creator><creator>Rahimuddin</creator><general>Harbin Engineering University</general><general>Springer Nature B.V</general><general>Marine Technology Center, Department of Aeronautics, Automotive & Ocean Engineering, Universiti Teknologi Malaysia, Skudai 81310 UTM, Malaysia%Department of Naval Architecture and Marine Engineering, Faculty of Engineering, Alexandria University, Alexandria 21526, Egypt%Program Studi Teknik Sistem Perkapalan, Universitas Hasanuddin, Makassar, 90245, Indonesia</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>W92</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H95</scope><scope>H96</scope><scope>H97</scope><scope>H99</scope><scope>L.F</scope><scope>L.G</scope><scope>P64</scope><scope>2B.</scope><scope>4A8</scope><scope>92I</scope><scope>93N</scope><scope>PSX</scope><scope>TCJ</scope></search><sort><creationdate>20170601</creationdate><title>Resistance Analysis of a Semi-SWATH Design Concept in Shallow Water</title><author>Arifah Ali ; 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Marine. Sci. Appl</stitle><addtitle>Journal of Marine Science and Application</addtitle><date>2017-06-01</date><risdate>2017</risdate><volume>16</volume><issue>2</issue><spage>182</spage><epage>189</epage><pages>182-189</pages><issn>1671-9433</issn><eissn>1993-5048</eissn><abstract>Resistance analysis is an important analytical method used to evaluate the hydrodynamic performance of High Speed Craft (HSC). Analysis of multihull resistance in shallow water is essential to the performance evaluation of any type of HSC. Ships operating in shallow water experience increases in resistance because of changes in pressure distribution and wave pattern. In this paper, the shallow water performance of an HSC design concept, the semi-Small Waterplane Area Twin Hull (semi-SWATH) form, is studied. The hull is installed with fin stabilizers to reduce dynamic motion effects, and the resistance components of the hull, hull trim condition, and maximum wave amplitude around the hull are determined via calm water resistance tests in shallow water. These criteria are important in analyzing semi-SWATH resistance in shallow water and its relation to flow around hull. The fore fin angle is fixed to zero degrees, while the aft fin angle is varied to 0o, 5o, 10o, and 15o. For each configuration, investigations are conducted with depth Froude numbers (FrH) ranging from 0.65 to 1.2, and the resistance tests are performed in shallow water at the towing tank of UTM. Analysis results indicate that the resistance, wave pattern, and trim of the semi-SWATH hull form are affected by the fin angle. The resistance is amplified whereas the trim and sinkage are reduced as the fin angle increases. Increases in fin angle contribute to seakeeping and stability but affect the hull resistance of HSCs.</abstract><cop>Harbin</cop><pub>Harbin Engineering University</pub><doi>10.1007/s11804-017-1406-x</doi><tpages>8</tpages></addata></record> |
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| identifier | ISSN: 1671-9433 |
| ispartof | Journal of marine science and application, 2017-06, Vol.16 (2), p.182-189 |
| issn | 1671-9433 1993-5048 |
| language | eng |
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| source | Springer Nature - Complete Springer Journals; Alma/SFX Local Collection |
| subjects | Electrical Machines and Networks Engineering Evaluation Geotechnical Engineering & Applied Earth Sciences height semi-SWATH shallow Hydrodynamics Machinery and Machine Elements Motion effects Motional resistance Offshore Engineering Power Electronics Pressure distribution resistance wave Sea keeping Shallow water Ship motion Ships Stability Stabilizers Stress concentration SWATH (ship) Towing Towing tanks Water resistance water fin Wave amplitude Wave resistance |
| title | Resistance Analysis of a Semi-SWATH Design Concept in Shallow Water |
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