{"created":"2023-06-20T15:08:15.713858+00:00","id":37666,"links":{},"metadata":{"_buckets":{"deposit":"69a47b0f-c926-4348-9084-8c769fd7d1be"},"_deposit":{"created_by":1,"id":"37666","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"37666"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00037666","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["482439","482438"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Aerodynamic sound due to interaction between a two-dimensional free shear layer and the leading edge of a parallel flat plate"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1992-11","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"22","bibliographicPageStart":"15","bibliographicVolumeNumber":"18","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所特別資料"},{"bibliographic_title":"Special Publication of National Aerospace Laboratory","bibliographic_titleLang":"en"}]}]},"item_5_description_14":{"attribute_name":"会議概要（会議名, 開催地, 会期, 主催者等）","attribute_value_mlt":[{"subitem_description":"航空宇宙技術研究所 24-25 Sep. 1991 (9th). 16-18 Mar. 1992 (10th) 東京 日本","subitem_description_type":"Other"}]},"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":"National Aerospace Laboratory 24-25 Sep. 1991 (9th). 16-18 Mar. 1992 (10th) Tokyo Japan","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"自由剪断流の中に平板の前縁を置くと空力的に音が発生する。そのメカニズムは、音によってノズル出口の剪断流に擾乱がひき起されること、その擾乱が下流に向って発達すること、擾乱を受けた渦の通過によって平板前縁で音が発生すること、を含んだフィードバックループに基づく自励振動である。現象に関わるパラメータの変化は、今回の実験では共鳴がないように留意したので、從来の同類実験にみられる尖ったり不連続だったりヒステリシスを伴ったりしたものでなく、滑らかで連続的で広い範囲にわたるものとなっている。メカニズムとして異なったものが2種類以上あるようであり、そのうちのいずれかが条件に応じて出現する。その条件として、ノズルから前縁に至る間の剪断流が層流か乱流かということは極めて重要である。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Sound is generated aerodynamically when the leading edge of a flat plate is set in the middle of a free shear layer. The mechanism for it is a self-maintaining oscillation based on a feedback loop including perturbation of the shear layer by sound at the nozzle lip, developments of the perturbation downstream, and sound generation at the edge by passing of the perturbed vorticity. Due to absence of acoustic resonance in the present set up, any change in parameters results in smooth, continuous and wide-ranged changes in the outcome, unlike in previous experiments, where changes are often sticky, discontinuous, and with hysteresis. It seems that there are more than two different mechanisms, and either of them appears according to the conditions. Among the conditions, whether the shear layer from the nozzle to the edge is laminar or turbulent is very important.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0004167004","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: NAL SP-18","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"航空宇宙技術研究所"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"National Aerospace Laboratory (NAL)"}]},"item_5_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0289-260X","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":"AN10097345","subitem_source_identifier_type":"NCID"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"広島大学 工学部"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Hiroshima University School of Engineering"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"坂尾, 富士彦"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sakao, Fujihiko","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":"2020-02-10"}],"displaytype":"detail","filename":"nalsp0018004.pdf","filesize":[{"value":"519.6 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0018004.pdf","url":"https://jaxa.repo.nii.ac.jp/record/37666/files/nalsp0018004.pdf"},"version_id":"346877dc-aff4-48d6-b01c-0eebba2da15c"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"境界層遷移","subitem_subject_scheme":"Other"},{"subitem_subject":"境界層制御","subitem_subject_scheme":"Other"},{"subitem_subject":"研究","subitem_subject_scheme":"Other"},{"subitem_subject":"空力音響学","subitem_subject_scheme":"Other"},{"subitem_subject":"空力音","subitem_subject_scheme":"Other"},{"subitem_subject":"騒音発生","subitem_subject_scheme":"Other"},{"subitem_subject":"自由剪断流","subitem_subject_scheme":"Other"},{"subitem_subject":"自励振動","subitem_subject_scheme":"Other"},{"subitem_subject":"空力的フィードバックループ","subitem_subject_scheme":"Other"},{"subitem_subject":"共鳴","subitem_subject_scheme":"Other"},{"subitem_subject":"エッジトーン","subitem_subject_scheme":"Other"},{"subitem_subject":"イオリアントーン","subitem_subject_scheme":"Other"},{"subitem_subject":"呼笛音","subitem_subject_scheme":"Other"},{"subitem_subject":"音響スペクトル","subitem_subject_scheme":"Other"},{"subitem_subject":"音圧レベル","subitem_subject_scheme":"Other"},{"subitem_subject":"boundary layer transition","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"boundary layer control","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"investigation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aeroacoustics","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aerodynamic sound","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sound generation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"free shear layer","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"selfexciting oscillation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"aerodynamic feedback loop","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"acoustic resonance","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"edge tone","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"eolian sound","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"whistle sound","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sound spectrum","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sound level","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"2次元剪断層と平板の干渉による発振と空力音","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"2次元剪断層と平板の干渉による発振と空力音"}]},"item_type_id":"5","owner":"1","path":["1891","1915"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"37666","relation_version_is_last":true,"title":["2次元剪断層と平板の干渉による発振と空力音"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:15:35.924787+00:00"}