Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas
The flow inside the two-dimensional semi-open-type nozzle for ship propulsion equipment, directly driven by high-pressure gas was investigated experimentally. The flow was unsteady and the gas and water phases clearly separated. We found that these waves appear on the interface for continuous gas ej...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2007-03-01
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| Series: | Journal of Fluid Science and Technology |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jfst/2/1/2_1_120/_pdf/-char/en |
| _version_ | 1818942681157468160 |
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| author | Michihisa TSUTAHARA Kazuhiko OGAWA Masahiko SAKAMOTO Takahiro MATSUI Shinsuke TAJIRI Masakazu TAJIMA Hiroki YOKOYAMA |
| author_facet | Michihisa TSUTAHARA Kazuhiko OGAWA Masahiko SAKAMOTO Takahiro MATSUI Shinsuke TAJIRI Masakazu TAJIMA Hiroki YOKOYAMA |
| author_sort | Michihisa TSUTAHARA |
| collection | DOAJ |
| description | The flow inside the two-dimensional semi-open-type nozzle for ship propulsion equipment, directly driven by high-pressure gas was investigated experimentally. The flow was unsteady and the gas and water phases clearly separated. We found that these waves appear on the interface for continuous gas ejection. It was clarified that waves play an important role in the pressure distribution. Intermittent gas ejection was also tried. The thrust itself decreases compared with continuous gas ejection, but propulsion efficiency, considering the gas ejection duration is increased. The flow patterns for intermittent gas ejection were also clarified. |
| first_indexed | 2024-12-20T07:15:18Z |
| format | Article |
| id | doaj.art-e454bcf4bfd84322bcf1648d9d34d906 |
| institution | Directory Open Access Journal |
| issn | 1880-5558 |
| language | English |
| last_indexed | 2024-12-20T07:15:18Z |
| publishDate | 2007-03-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Fluid Science and Technology |
| spelling | doaj.art-e454bcf4bfd84322bcf1648d9d34d9062022-12-21T19:48:48ZengThe Japan Society of Mechanical EngineersJournal of Fluid Science and Technology1880-55582007-03-012112012910.1299/jfst.2.120jfstStudy on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure GasMichihisa TSUTAHARA0Kazuhiko OGAWA1Masahiko SAKAMOTO2Takahiro MATSUI3Shinsuke TAJIRI4Masakazu TAJIMA5Hiroki YOKOYAMA6Graduate School of Science and Technology, Kobe UniversityOsaka sangyo universityNara National Colledge of TechnologyGraduate School of Science and Technology, Kobe UniversityGraduate School of Science and Technology, Kobe UniversityGraduate School of Science and Technology, Kobe UniversityGraduate School of Science and Technology, Kobe UniversityThe flow inside the two-dimensional semi-open-type nozzle for ship propulsion equipment, directly driven by high-pressure gas was investigated experimentally. The flow was unsteady and the gas and water phases clearly separated. We found that these waves appear on the interface for continuous gas ejection. It was clarified that waves play an important role in the pressure distribution. Intermittent gas ejection was also tried. The thrust itself decreases compared with continuous gas ejection, but propulsion efficiency, considering the gas ejection duration is increased. The flow patterns for intermittent gas ejection were also clarified.https://www.jstage.jst.go.jp/article/jfst/2/1/2_1_120/_pdf/-char/enship propulsionwater jetnozzle flowunsteady flowflow visualization |
| spellingShingle | Michihisa TSUTAHARA Kazuhiko OGAWA Masahiko SAKAMOTO Takahiro MATSUI Shinsuke TAJIRI Masakazu TAJIMA Hiroki YOKOYAMA Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas Journal of Fluid Science and Technology ship propulsion water jet nozzle flow unsteady flow flow visualization |
| title | Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas |
| title_full | Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas |
| title_fullStr | Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas |
| title_full_unstemmed | Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas |
| title_short | Study on the Performance Improvement of Ship Propulsion Equipment Directly Driven by High-Pressure Gas |
| title_sort | study on the performance improvement of ship propulsion equipment directly driven by high pressure gas |
| topic | ship propulsion water jet nozzle flow unsteady flow flow visualization |
| url | https://www.jstage.jst.go.jp/article/jfst/2/1/2_1_120/_pdf/-char/en |
| work_keys_str_mv | AT michihisatsutahara studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT kazuhikoogawa studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT masahikosakamoto studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT takahiromatsui studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT shinsuketajiri studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT masakazutajima studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas AT hirokiyokoyama studyontheperformanceimprovementofshippropulsionequipmentdirectlydrivenbyhighpressuregas |