{"created":"2023-06-20T15:08:47.180845+00:00","id":38270,"links":{},"metadata":{"_buckets":{"deposit":"10328082-b57b-4301-bd5d-3a2b6b9f583d"},"_deposit":{"created_by":1,"id":"38270","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"38270"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00038270","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["432592","432594","432593","432591"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"A study of sound wave emission mechanism in supersonic free shear flows using DNS"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2003-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"279","bibliographicPageStart":"274","bibliographicVolumeNumber":"57","bibliographic_titles":[{"bibliographic_title":"航空宇宙技術研究所特別資料: 航空宇宙数値シミュレーション技術シンポジウム2002論文集"},{"bibliographic_title":"Special Publication of National Aerospace Laboratory: Proceedings of Aerospace Numerical Simulation Symposium 2002","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Supersonic free shear flows including near and far fields were calculated by three dimensional direct numerical simulations with shock capturing compact schemes. Mechanism of sound wave emission was investigated in a transitional plane jet. Results from DNS are presented for Mc = 1.17 and Mc = 1.55 plane jets. The previous linear stability analyses showed that the phase velocity of most unstable 3D A1 mode was less than the ambient speed of sound. The result of 2D DNS shows that the amplification of a 2D A1 mode generates strong Mach waves. 3D DNS with A1 oblique modes indicates that the growth of A1 oblique modes have a crucial effect of 3D flow developments and that a less amplification of the 2D A1 mode yields weak Mach waves. These results suggest that quick decreases of the jet centerline velocity caused by the growth of 3D A1 mode restrain the strong Mach wave emission.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0045948049","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-57","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":"電気通信大学 大学院"},{"subitem_text_value":"電気通信大学 知能機械工学科"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications Graduate School"},{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications Department of Mechanical Engineering and Intelligent Systems"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"渡辺, 大輔"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"前川, 博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Watanabe, Daisuke","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Maekawa, Hiroshi","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":"2020-01-24"}],"displaytype":"detail","filename":"nalsp0057049.pdf","filesize":[{"value":"660.8 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0057049.pdf","url":"https://jaxa.repo.nii.ac.jp/record/38270/files/nalsp0057049.pdf"},"version_id":"06b3ac5b-8878-4c79-99fc-878d1d47071f"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"DNS","subitem_subject_scheme":"Other"},{"subitem_subject":"SST","subitem_subject_scheme":"Other"},{"subitem_subject":"音波","subitem_subject_scheme":"Other"},{"subitem_subject":"超音速自由せん断流","subitem_subject_scheme":"Other"},{"subitem_subject":"3次元モデル","subitem_subject_scheme":"Other"},{"subitem_subject":"音速","subitem_subject_scheme":"Other"},{"subitem_subject":"ニュートン流体","subitem_subject_scheme":"Other"},{"subitem_subject":"保存方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"エネルギー保存","subitem_subject_scheme":"Other"},{"subitem_subject":"研究開発","subitem_subject_scheme":"Other"},{"subitem_subject":"圧力分布","subitem_subject_scheme":"Other"},{"subitem_subject":"Navier-Stokes方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"DNS","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"SST","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sound wave","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"supersonic free shear flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"3 dimensional model","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"acoustic velocity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Newtonian fluid","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"conservation equation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"energy conservation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"research and development","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"pressure distribution","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Navier-Stokes equation","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":"DNSによる超音速自由せん断流における音波放出機構の研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"DNSによる超音速自由せん断流における音波放出機構の研究"}]},"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":"38270","relation_version_is_last":true,"title":["DNSによる超音速自由せん断流における音波放出機構の研究"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T22:42:28.372806+00:00"}