{"created":"2023-06-20T14:37:04.190421+00:00","id":3445,"links":{},"metadata":{"_buckets":{"deposit":"9342fbae-7dc2-485d-b8c5-c52f3c03db5a"},"_deposit":{"created_by":1,"id":"3445","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"3445"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00003445","sets":["1887:1891","9:789:817:824"]},"author_link":["13640","13644","13641","13643","13642","13639"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2017-03-15","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"494","bibliographicPageStart":"485","bibliographicVolumeNumber":"JAXA-SP-16-008E","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料"},{"bibliographic_title":"JAXA Special Publication: Proceedings of the First International Symposium on Flutter and its Application","bibliographic_titleLang":"en"}]}]},"item_5_description_15":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）（英）","attribute_value_mlt":[{"subitem_description":"First International Symposium on Flutter and its Application (May 15-17, 2016. Mielparque-tokyo), Minato-ku, Tokyo, Japan","subitem_description_type":"Other"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The Betz limit for extraction of power from a flowing fluid is based upon an assumption of steady flow, and effects from viscosity and non-uniform pressures are ignored. Flapping foils used for power generation involve inherently highly unsteady flows, and operate most effectively when there is significant vortex shedding from the foil leading edge. This work conducts an analysis of the theoretical limits of efficiency for such an unsteady system, for the first time. Analysis of the magnitude and impact of the unsteady effects shows that the action of shed vortices as they convect downstream entrains a significant amount of momentum and kinetic energy into the wake of the foil. This entrainment is likely insufficient to render the Betz limit invalid for a single foil, however it is promising for a tandem foil system where the downstream foil benefits from this re-energisation of the upstrem foil wake, and suggests a mechanism by which the Betz limit for such a system (64%) might theoretically be exceeded.","subitem_description_type":"Other"}]},"item_5_description_18":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"形態: カラー図版あり","subitem_description_type":"Other"}]},"item_5_description_19":{"attribute_name":"内容記述（英）","attribute_value_mlt":[{"subitem_description":"Physical characteristics: Original contains color illustrations","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA1630046052","subitem_description_type":"Other"}]},"item_5_description_33":{"attribute_name":"レポート番号","attribute_value_mlt":[{"subitem_description":"レポート番号: JAXA-SP-16-008E","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構(JAXA)"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_5_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-113X","subitem_source_identifier_type":"ISSN"}]},"item_5_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA11984031","subitem_source_identifier_type":"NCID"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"The University of New South Wales"},{"subitem_text_language":"en","subitem_text_value":"The University of New South Wales"},{"subitem_text_language":"en","subitem_text_value":"The University of New South Wales"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Young, John"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田, 方宝"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Lai, Joseph C.S."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Young, John","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tian, Fang-Bao","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Lai, Joseph C.S.","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-15"}],"displaytype":"detail","filename":"AA1630046052.pdf","filesize":[{"value":"1.2 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"AA1630046052.pdf","url":"https://jaxa.repo.nii.ac.jp/record/3445/files/AA1630046052.pdf"},"version_id":"7e6eac19-3ce4-42bf-a96e-b2fab37edd90"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Flapping foil","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Power generation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Betz analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"Betz analysis of a single flapping foil power generator","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Betz analysis of a single flapping foil power generator","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["824","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-04-27"},"publish_date":"2017-04-27","publish_status":"0","recid":"3445","relation_version_is_last":true,"title":["Betz analysis of a single flapping foil power generator"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T09:02:05.752227+00:00"}