A Study about Interaction of Propellers with Multiple Energy Saving Devices: The Effect to Self-Propulsion Factors due to Propeller Position and Pitch Distribution
In recent years, ship owners and shipyards need more energy-saving vessels by the regulation of SOx and EEDI (Energy Efficiency Design Index). Therefore, main shipyards are already equipped with ESDs (Energy Saving Devices) in front and behind the propeller, such as a stern duct and a rudder bulb. H...
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| Veröffentlicht in: | Journal of the Japan Society of Naval Architects and Ocean Engineers 2021, Vol.32, pp.1-8 |
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| container_title | Journal of the Japan Society of Naval Architects and Ocean Engineers |
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| creator | Okada, Yoshihisa Katayama, Kenta Kobayashi, Yosuke Hiroi, Takamichi Ichinose, Yasuo Ando, Jun |
| description | In recent years, ship owners and shipyards need more energy-saving vessels by the regulation of SOx and EEDI (Energy Efficiency Design Index). Therefore, main shipyards are already equipped with ESDs (Energy Saving Devices) in front and behind the propeller, such as a stern duct and a rudder bulb. However, there are almost no research examples of the interaction of propellers with ESDs, and there is a possibility of improvement of propulsion performance by consideration of the interaction.The self-propulsion test results with the stern duct and rudder bulb showed almost the same effect as adding the energy-saving effect of each ESD, and the highest energy-saving effect compared with bare hull was 15.0%. Also, due to the propeller position and pitch distribution, BHP (Brake Horse Power) difference of a maximum of 4.9% occurred. The PIV (Particle Image Velocimetry) measurement results confirmed that the flow field in front and behind the propeller changed depending on the propeller position and pitch distribution, and the interaction of propeller with ESDs also changed.In this paper, the authors described model test results to investigate the interaction of propellers with ESDs for achievement of highest efficiency of propulsion devices. |
| doi_str_mv | 10.2534/jjasnaoe.32.1 |
| format | Article |
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Therefore, main shipyards are already equipped with ESDs (Energy Saving Devices) in front and behind the propeller, such as a stern duct and a rudder bulb. However, there are almost no research examples of the interaction of propellers with ESDs, and there is a possibility of improvement of propulsion performance by consideration of the interaction.The self-propulsion test results with the stern duct and rudder bulb showed almost the same effect as adding the energy-saving effect of each ESD, and the highest energy-saving effect compared with bare hull was 15.0%. Also, due to the propeller position and pitch distribution, BHP (Brake Horse Power) difference of a maximum of 4.9% occurred. The PIV (Particle Image Velocimetry) measurement results confirmed that the flow field in front and behind the propeller changed depending on the propeller position and pitch distribution, and the interaction of propeller with ESDs also changed.In this paper, the authors described model test results to investigate the interaction of propellers with ESDs for achievement of highest efficiency of propulsion devices.</description><identifier>ISSN: 1880-3717</identifier><identifier>EISSN: 1881-1760</identifier><identifier>DOI: 10.2534/jjasnaoe.32.1</identifier><language>jpn</language><publisher>Tokyo: The Japan Society of Naval Architects and Ocean Engineers</publisher><subject>Brakes ; Devices ; Distribution ; Efficiency ; Electric power distribution ; Energy ; Energy conservation ; Energy efficiency ; Fuel economy ; Horsepower ; Interactions ; Measurement ; Model testing ; Particle image velocimetry ; Power management ; Propellers ; Propulsion ; Propulsion systems ; Rudders ; Ships ; Shipyards ; Vessels</subject><ispartof>Journal of the Japan Society of Naval Architects and Ocean Engineers, 2021, Vol.32, pp.1-8</ispartof><rights>2021 The Japan Society of Naval Architects and Ocean Engineers</rights><rights>Copyright Japan Science and Technology Agency 2021</rights><rights>Copyright 2021</rights><rights>Copyright Japan Science and Technology Agency 2020</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,27924,27925</link.rule.ids></links><search><creatorcontrib>Okada, Yoshihisa</creatorcontrib><creatorcontrib>Katayama, Kenta</creatorcontrib><creatorcontrib>Kobayashi, Yosuke</creatorcontrib><creatorcontrib>Hiroi, Takamichi</creatorcontrib><creatorcontrib>Ichinose, Yasuo</creatorcontrib><creatorcontrib>Ando, Jun</creatorcontrib><title>A Study about Interaction of Propellers with Multiple Energy Saving Devices: The Effect to Self-Propulsion Factors due to Propeller Position and Pitch Distribution</title><title>Journal of the Japan Society of Naval Architects and Ocean Engineers</title><addtitle>J.JASNAOE</addtitle><description>In recent years, ship owners and shipyards need more energy-saving vessels by the regulation of SOx and EEDI (Energy Efficiency Design Index). Therefore, main shipyards are already equipped with ESDs (Energy Saving Devices) in front and behind the propeller, such as a stern duct and a rudder bulb. However, there are almost no research examples of the interaction of propellers with ESDs, and there is a possibility of improvement of propulsion performance by consideration of the interaction.The self-propulsion test results with the stern duct and rudder bulb showed almost the same effect as adding the energy-saving effect of each ESD, and the highest energy-saving effect compared with bare hull was 15.0%. Also, due to the propeller position and pitch distribution, BHP (Brake Horse Power) difference of a maximum of 4.9% occurred. The PIV (Particle Image Velocimetry) measurement results confirmed that the flow field in front and behind the propeller changed depending on the propeller position and pitch distribution, and the interaction of propeller with ESDs also changed.In this paper, the authors described model test results to investigate the interaction of propellers with ESDs for achievement of highest efficiency of propulsion devices.</description><subject>Brakes</subject><subject>Devices</subject><subject>Distribution</subject><subject>Efficiency</subject><subject>Electric power distribution</subject><subject>Energy</subject><subject>Energy conservation</subject><subject>Energy efficiency</subject><subject>Fuel economy</subject><subject>Horsepower</subject><subject>Interactions</subject><subject>Measurement</subject><subject>Model testing</subject><subject>Particle image velocimetry</subject><subject>Power management</subject><subject>Propellers</subject><subject>Propulsion</subject><subject>Propulsion systems</subject><subject>Rudders</subject><subject>Ships</subject><subject>Shipyards</subject><subject>Vessels</subject><issn>1880-3717</issn><issn>1881-1760</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp90FFLwzAQB_AgCs7po-8BnzuTXNqmb445dThRmD6HW5tuLbWtSTrpt7c69XEv_zu4H3dwhFxyNhEhyOuyRFdjYyYgJvyIjLhSPOBxxI5_ehZAzONTcuZcyZgchmpEHqd05busp7huOk8XtTcWU180NW1y-mKb1lSVsY5-Fn5Ln7rKF21l6Lw2dtPTFe6KekNvza5IjTsnJzlWzlz81jF5u5u_zh6C5fP9YjZdBiWXXAWKhYmMuJIZyxOAIaRJJYTrJMYQM0QFJlJCRjEwBSpGzEW8znKpBhsBgzG52u9tbfPRGed12XS2Hk5qEUaDAhaqwwq4SETEw8OKKcYgSeSgbvaqdB43Rre2eEfba7S-SCuj_z6vQWj2Hfx_lG7RalPDF-2ofiA</recordid><startdate>20210101</startdate><enddate>20210101</enddate><creator>Okada, Yoshihisa</creator><creator>Katayama, Kenta</creator><creator>Kobayashi, Yosuke</creator><creator>Hiroi, Takamichi</creator><creator>Ichinose, Yasuo</creator><creator>Ando, Jun</creator><general>The Japan Society of Naval Architects and Ocean Engineers</general><general>Japan Science and Technology Agency</general><scope>7TB</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>KR7</scope><scope>C1K</scope><scope>H95</scope><scope>H96</scope><scope>H97</scope><scope>H98</scope><scope>H99</scope><scope>L.F</scope><scope>L.G</scope><scope>P64</scope></search><sort><creationdate>20210101</creationdate><title>A Study about Interaction of Propellers with Multiple Energy Saving Devices</title><author>Okada, Yoshihisa ; 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Therefore, main shipyards are already equipped with ESDs (Energy Saving Devices) in front and behind the propeller, such as a stern duct and a rudder bulb. However, there are almost no research examples of the interaction of propellers with ESDs, and there is a possibility of improvement of propulsion performance by consideration of the interaction.The self-propulsion test results with the stern duct and rudder bulb showed almost the same effect as adding the energy-saving effect of each ESD, and the highest energy-saving effect compared with bare hull was 15.0%. Also, due to the propeller position and pitch distribution, BHP (Brake Horse Power) difference of a maximum of 4.9% occurred. The PIV (Particle Image Velocimetry) measurement results confirmed that the flow field in front and behind the propeller changed depending on the propeller position and pitch distribution, and the interaction of propeller with ESDs also changed.In this paper, the authors described model test results to investigate the interaction of propellers with ESDs for achievement of highest efficiency of propulsion devices.</abstract><cop>Tokyo</cop><pub>The Japan Society of Naval Architects and Ocean Engineers</pub><doi>10.2534/jjasnaoe.32.1</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese |
| subjects | Brakes Devices Distribution Efficiency Electric power distribution Energy Energy conservation Energy efficiency Fuel economy Horsepower Interactions Measurement Model testing Particle image velocimetry Power management Propellers Propulsion Propulsion systems Rudders Ships Shipyards Vessels |
| title | A Study about Interaction of Propellers with Multiple Energy Saving Devices: The Effect to Self-Propulsion Factors due to Propeller Position and Pitch Distribution |
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