Narrow ship wakes and wave drag for planing hulls
The angle formed by ship wakes is usually found close to the value predicted by Kelvin, α=19.47°. However we recently showed that the angle of maximum wave amplitude can be significantly smaller at large Froude number. We show how the finite range of wavenumbers excited by the ship explains the obse...
Gespeichert in:
| Veröffentlicht in: | Ocean engineering 2014-11, Vol.90, p.34-38 |
|---|---|
| Hauptverfasser: | , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 38 |
|---|---|
| container_issue | |
| container_start_page | 34 |
| container_title | Ocean engineering |
| container_volume | 90 |
| creator | Rabaud, M. Moisy, F. |
| description | The angle formed by ship wakes is usually found close to the value predicted by Kelvin, α=19.47°. However we recently showed that the angle of maximum wave amplitude can be significantly smaller at large Froude number. We show how the finite range of wavenumbers excited by the ship explains the observed decrease of the wake angle as 1/Fr for Fr>0.5, where Fr=U/gL is the Froude number based on the hull length L. At such large Froude numbers, sailing boats are in the planing regime, and a decrease of the wave drag is observed. We discuss in this paper the possible connection between the decrease of the wake angle and the decrease of the wave drag at large Froude number.
•Simulation of narrow wakes at large hull Froude number.•Observation of a decrease of the wave drag when the wake is narrow.•Comparison of the wave drag evolution to the case of planing hull. |
| doi_str_mv | 10.1016/j.oceaneng.2014.06.039 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_hal_p</sourceid><recordid>TN_cdi_hal_primary_oai_HAL_hal_04009928v1</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0029801814002522</els_id><sourcerecordid>1647012357</sourcerecordid><originalsourceid>FETCH-LOGICAL-c545t-ef374a9bf9fbfba422c2a71e121026da14b571c69e1d89d0436bd1bbf41b408d3</originalsourceid><addsrcrecordid>eNqNkMGO0zAQhi0EEmXhFVAuSHBImHEcx76xWgGLVMEFztbEHrcu2aTYbVe8Pam67BVOMxp9M_PrE-I1QoOA-v2umT3TxNOmkYCqAd1Aa5-IFZq-rTvZmadiBSBtbQDNc_GilB0AaA3tSuBXynm-r8o27at7-smloiks3YmrkGlTxTlX-5GmNG2q7XEcy0vxLNJY-NVDvRI_Pn38fnNbr799_nJzva59p7pDzbHtFdkh2jjEgZSUXlKPjBJB6kCohq5Hry1jMDaAavUQcBiiwkGBCe2VeHe5u6XR7XO6o_zbzZTc7fXanWegAKyV5oQL-_bC7vP868jl4O5S8TwuuXk-Foe6w9b2Unf_gaoeULZdv6D6gvo8l5I5PsZAcGf1buf-qndn9Q60W9Qvi28eflDxNMZMk0_lcVsai2iMWbgPF44Xj6fE2RWfePIcUmZ_cGFO_3r1B0U-mqI</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1647012357</pqid></control><display><type>article</type><title>Narrow ship wakes and wave drag for planing hulls</title><source>Elsevier ScienceDirect Journals Complete</source><creator>Rabaud, M. ; Moisy, F.</creator><creatorcontrib>Rabaud, M. ; Moisy, F.</creatorcontrib><description>The angle formed by ship wakes is usually found close to the value predicted by Kelvin, α=19.47°. However we recently showed that the angle of maximum wave amplitude can be significantly smaller at large Froude number. We show how the finite range of wavenumbers excited by the ship explains the observed decrease of the wake angle as 1/Fr for Fr>0.5, where Fr=U/gL is the Froude number based on the hull length L. At such large Froude numbers, sailing boats are in the planing regime, and a decrease of the wave drag is observed. We discuss in this paper the possible connection between the decrease of the wake angle and the decrease of the wave drag at large Froude number.
•Simulation of narrow wakes at large hull Froude number.•Observation of a decrease of the wave drag when the wake is narrow.•Comparison of the wave drag evolution to the case of planing hull.</description><identifier>ISSN: 0029-8018</identifier><identifier>EISSN: 1873-5258</identifier><identifier>DOI: 10.1016/j.oceaneng.2014.06.039</identifier><identifier>CODEN: OCENBQ</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Boats ; Exact sciences and technology ; Froude number ; Ground, air and sea transportation, marine construction ; Hulls ; Hulls (structures) ; Kelvin wedge ; Marine ; Marine construction ; Physics ; Planing ; Planing hull ; Ships ; Wakes ; Wave drag</subject><ispartof>Ocean engineering, 2014-11, Vol.90, p.34-38</ispartof><rights>2014 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c545t-ef374a9bf9fbfba422c2a71e121026da14b571c69e1d89d0436bd1bbf41b408d3</citedby><cites>FETCH-LOGICAL-c545t-ef374a9bf9fbfba422c2a71e121026da14b571c69e1d89d0436bd1bbf41b408d3</cites><orcidid>0000-0003-1527-4744 ; 0000-0003-0408-4232</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0029801814002522$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>230,309,310,314,776,780,785,786,881,3537,23909,23910,25118,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28911888$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-04009928$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Rabaud, M.</creatorcontrib><creatorcontrib>Moisy, F.</creatorcontrib><title>Narrow ship wakes and wave drag for planing hulls</title><title>Ocean engineering</title><description>The angle formed by ship wakes is usually found close to the value predicted by Kelvin, α=19.47°. However we recently showed that the angle of maximum wave amplitude can be significantly smaller at large Froude number. We show how the finite range of wavenumbers excited by the ship explains the observed decrease of the wake angle as 1/Fr for Fr>0.5, where Fr=U/gL is the Froude number based on the hull length L. At such large Froude numbers, sailing boats are in the planing regime, and a decrease of the wave drag is observed. We discuss in this paper the possible connection between the decrease of the wake angle and the decrease of the wave drag at large Froude number.
•Simulation of narrow wakes at large hull Froude number.•Observation of a decrease of the wave drag when the wake is narrow.•Comparison of the wave drag evolution to the case of planing hull.</description><subject>Applied sciences</subject><subject>Boats</subject><subject>Exact sciences and technology</subject><subject>Froude number</subject><subject>Ground, air and sea transportation, marine construction</subject><subject>Hulls</subject><subject>Hulls (structures)</subject><subject>Kelvin wedge</subject><subject>Marine</subject><subject>Marine construction</subject><subject>Physics</subject><subject>Planing</subject><subject>Planing hull</subject><subject>Ships</subject><subject>Wakes</subject><subject>Wave drag</subject><issn>0029-8018</issn><issn>1873-5258</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkMGO0zAQhi0EEmXhFVAuSHBImHEcx76xWgGLVMEFztbEHrcu2aTYbVe8Pam67BVOMxp9M_PrE-I1QoOA-v2umT3TxNOmkYCqAd1Aa5-IFZq-rTvZmadiBSBtbQDNc_GilB0AaA3tSuBXynm-r8o27at7-smloiks3YmrkGlTxTlX-5GmNG2q7XEcy0vxLNJY-NVDvRI_Pn38fnNbr799_nJzva59p7pDzbHtFdkh2jjEgZSUXlKPjBJB6kCohq5Hry1jMDaAavUQcBiiwkGBCe2VeHe5u6XR7XO6o_zbzZTc7fXanWegAKyV5oQL-_bC7vP868jl4O5S8TwuuXk-Foe6w9b2Unf_gaoeULZdv6D6gvo8l5I5PsZAcGf1buf-qndn9Q60W9Qvi28eflDxNMZMk0_lcVsai2iMWbgPF44Xj6fE2RWfePIcUmZ_cGFO_3r1B0U-mqI</recordid><startdate>20141101</startdate><enddate>20141101</enddate><creator>Rabaud, M.</creator><creator>Moisy, F.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope><scope>1XC</scope><orcidid>https://orcid.org/0000-0003-1527-4744</orcidid><orcidid>https://orcid.org/0000-0003-0408-4232</orcidid></search><sort><creationdate>20141101</creationdate><title>Narrow ship wakes and wave drag for planing hulls</title><author>Rabaud, M. ; Moisy, F.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c545t-ef374a9bf9fbfba422c2a71e121026da14b571c69e1d89d0436bd1bbf41b408d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied sciences</topic><topic>Boats</topic><topic>Exact sciences and technology</topic><topic>Froude number</topic><topic>Ground, air and sea transportation, marine construction</topic><topic>Hulls</topic><topic>Hulls (structures)</topic><topic>Kelvin wedge</topic><topic>Marine</topic><topic>Marine construction</topic><topic>Physics</topic><topic>Planing</topic><topic>Planing hull</topic><topic>Ships</topic><topic>Wakes</topic><topic>Wave drag</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rabaud, M.</creatorcontrib><creatorcontrib>Moisy, F.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Hyper Article en Ligne (HAL)</collection><jtitle>Ocean engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rabaud, M.</au><au>Moisy, F.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Narrow ship wakes and wave drag for planing hulls</atitle><jtitle>Ocean engineering</jtitle><date>2014-11-01</date><risdate>2014</risdate><volume>90</volume><spage>34</spage><epage>38</epage><pages>34-38</pages><issn>0029-8018</issn><eissn>1873-5258</eissn><coden>OCENBQ</coden><abstract>The angle formed by ship wakes is usually found close to the value predicted by Kelvin, α=19.47°. However we recently showed that the angle of maximum wave amplitude can be significantly smaller at large Froude number. We show how the finite range of wavenumbers excited by the ship explains the observed decrease of the wake angle as 1/Fr for Fr>0.5, where Fr=U/gL is the Froude number based on the hull length L. At such large Froude numbers, sailing boats are in the planing regime, and a decrease of the wave drag is observed. We discuss in this paper the possible connection between the decrease of the wake angle and the decrease of the wave drag at large Froude number.
•Simulation of narrow wakes at large hull Froude number.•Observation of a decrease of the wave drag when the wake is narrow.•Comparison of the wave drag evolution to the case of planing hull.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.oceaneng.2014.06.039</doi><tpages>5</tpages><orcidid>https://orcid.org/0000-0003-1527-4744</orcidid><orcidid>https://orcid.org/0000-0003-0408-4232</orcidid></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0029-8018 |
| ispartof | Ocean engineering, 2014-11, Vol.90, p.34-38 |
| issn | 0029-8018 1873-5258 |
| language | eng |
| recordid | cdi_hal_primary_oai_HAL_hal_04009928v1 |
| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Boats Exact sciences and technology Froude number Ground, air and sea transportation, marine construction Hulls Hulls (structures) Kelvin wedge Marine Marine construction Physics Planing Planing hull Ships Wakes Wave drag |
| title | Narrow ship wakes and wave drag for planing hulls |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-02-13T00%3A28%3A07IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_hal_p&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Narrow%20ship%20wakes%20and%20wave%20drag%20for%20planing%20hulls&rft.jtitle=Ocean%20engineering&rft.au=Rabaud,%20M.&rft.date=2014-11-01&rft.volume=90&rft.spage=34&rft.epage=38&rft.pages=34-38&rft.issn=0029-8018&rft.eissn=1873-5258&rft.coden=OCENBQ&rft_id=info:doi/10.1016/j.oceaneng.2014.06.039&rft_dat=%3Cproquest_hal_p%3E1647012357%3C/proquest_hal_p%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=1647012357&rft_id=info:pmid/&rft_els_id=S0029801814002522&rfr_iscdi=true |