{"created":"2023-06-20T14:38:53.522584+00:00","id":5529,"links":{},"metadata":{"_buckets":{"deposit":"a7946161-45cd-478c-bd10-91b2e8e6b2a0"},"_deposit":{"created_by":1,"id":"5529","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"5529"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00005529","sets":["1887:1891","9:789:972:976"]},"author_link":["26897","26898","26896","26900","26895","26899"],"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-02-29","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"26","bibliographicPageStart":"25","bibliographicVolumeNumber":"JAXA-SP-07-026E","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料: 境界層遷移の解明と制御研究会講演論文集　第40回"},{"bibliographic_title":"JAXA Special Publication: Proceedings of the 40th JAXA Workshop on Investigation and Control of Boundary-Layer Transition","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The generation of tonal noise by airfoils has been a continuing problem of which the overall mechanism still remains yet to be uncovered. Results of an experimental investigation on tonal noise generation are presented. Quantitative measurements were obtained by use of hotwire and microphone. Furthermore, a flow visualization of the phenomenon was carried out by use of a smoke wire technique. Based on these experiments, a detailed description of the flow close to the trailing edge is obtained. The sound generation process takes place on the pressure side in the near-trailing edge region, where a thin layer of separated flow exists, which is essential to the mechanism. A Kelvin-Helmholtz instability appears to be the cause of the vortex generation. The interaction of shedding eddies with the trailing edge, resulting in the emission of pressure waves, represents the noise source. Events on the suction side are found to be of no significant influence to the sound generation mechanism. The role of TS (Tollmien Schlichting) waves in the sound generation process is re-evaluated and a novel self-excited feedback loop is proposed to explain the occurrence of tonal noise generation.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0063908008","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-07-026E","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"}]},"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_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"National Aerospace Laboratory"},{"subitem_text_value":"宇宙航空研究開発機構"},{"subitem_text_value":"宇宙航空研究開発機構"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"},{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Tuinstra, M."}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"跡部, 隆"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"高木, 正平"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Tuinstra, M.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Atobe, Takashi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Takagi, Shohei","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":"2020-01-16"}],"displaytype":"detail","filename":"63908008.pdf","filesize":[{"value":"315.0 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"63908008.pdf","url":"https://jaxa.repo.nii.ac.jp/record/5529/files/63908008.pdf"},"version_id":"d2c5c0b3-bfa8-467a-888d-09ccf849279c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"空力騒音","subitem_subject_scheme":"Other"},{"subitem_subject":"騒音発生","subitem_subject_scheme":"Other"},{"subitem_subject":"翼型","subitem_subject_scheme":"Other"},{"subitem_subject":"後縁部","subitem_subject_scheme":"Other"},{"subitem_subject":"風洞試験","subitem_subject_scheme":"Other"},{"subitem_subject":"低速風洞","subitem_subject_scheme":"Other"},{"subitem_subject":"速度分布","subitem_subject_scheme":"Other"},{"subitem_subject":"境界層","subitem_subject_scheme":"Other"},{"subitem_subject":"流れの可視化","subitem_subject_scheme":"Other"},{"subitem_subject":"トルミーン-シュリヒティング波","subitem_subject_scheme":"Other"},{"subitem_subject":"aerodynamic noise","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"noise generation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"airfoil","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"trailing edge","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"wind tunnel test","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"low speed wind tunnel","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"velocity distribution","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"boundary layer","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flow visualization","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Tollmien-Schlichting wave","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":"An investigation on airfoil tonal noise generation","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"An investigation on airfoil tonal noise generation","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["976","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"5529","relation_version_is_last":true,"title":["An investigation on airfoil tonal noise generation"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T08:12:50.897492+00:00"}