{"created":"2023-06-20T15:07:25.196858+00:00","id":36794,"links":{},"metadata":{"_buckets":{"deposit":"8444d2fd-e062-41eb-9980-d6c25aa5a4ff"},"_deposit":{"created_by":1,"id":"36794","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"36794"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00036794","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["477644","477646","477650","477648","477649","477641","477645","477643","477647","477642"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Numerical analysis of turbulence based on a DNS data base"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1996-01","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"152","bibliographicPageStart":"147","bibliographicVolumeNumber":"30","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 7-9 Jun. 1995 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 7-9 Jun. 1995 Tokyo Japan","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"数値風洞(NWT)を用いて減衰等方性乱流の直接数値シミュレーション(DNS)を行った。完全に発達した乱流と受動スカラー場、温度が、最高512{3}の空間格子点数を有するDNSにより得られた。流れ解析の結果、乱流渦度の強い部分が渦管領域に集中するが、温度勾配はシート状空間領域を示すことが分かった。渦管領域に密接するほとんどの渦度ベクトルは、歪み速度テンソルの中間固有値に相当する固有ベクトルの方向に1列に並ぶ。これとは反対にシート状領域に密着する温度勾配ベクトルのほとんどは、歪み速度テンソルの負の固有値に相当する固有ベクトルの方向を向く。以上の結果、渦管領域ではBurgerの渦と類似の特性を有すること、一方、温度勾配のシート状領域の形成メカニズムは未解明であることを示した。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Direct Numerical Simulation (DNS) of decaying isotropic turbulence was made using the Numerical Wind Tunnel (NWT). A fully developed turbulent flow and a passive scalar field, temperature, were obtained by the DNS with up to 512(exp 3) mesh points in space. From the analysis of the flow, it is obtained that intense portions of the turbulent vorticity concentrate into worm-like regions, but those of the temperature gradient into sheet-like regions in space. Most vorticity vectors nearby the worm-like regions align into the direction of the eigen vectors corresponding to the intermediate eigenvalue of the strain rate tensor. In contrast with this, most temperature gradient vectors nearby the sheet-like regions align into the direction of the eigen vectors corresponding to the negative eigenvalue of the strain rate tensor. These results show that the worm-like regions have a similar property to Burger's Vortex. On the other hand, the mechanism forming the sheet-like regions of temperature gradient is not yet clear.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0000294026","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-30","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"},{"subitem_text_value":"電気通信大学"},{"subitem_text_value":"電気通信大学"},{"subitem_text_value":"航空宇宙技術研究所"},{"subitem_text_value":"航空宇宙技術研究所"}]},"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"},{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications"},{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"},{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"生出, 伸一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山口, 博"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"細川, 巖"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"山本, 稀義"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"末松, 和代"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Oide, Shinichi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamaguchi, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hosokawa, Iwao","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamamoto, Kiyoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Suematsu, Kazuyo","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":"nalsp0030026.pdf","filesize":[{"value":"521.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0030026.pdf","url":"https://jaxa.repo.nii.ac.jp/record/36794/files/nalsp0030026.pdf"},"version_id":"95cd8acb-cd3a-4c1f-b3b2-c96ad788422d"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"減衰等方性乱流","subitem_subject_scheme":"Other"},{"subitem_subject":"直接数値シミュレーション","subitem_subject_scheme":"Other"},{"subitem_subject":"数値風洞プログラム","subitem_subject_scheme":"Other"},{"subitem_subject":"流れ構造","subitem_subject_scheme":"Other"},{"subitem_subject":"温度勾配","subitem_subject_scheme":"Other"},{"subitem_subject":"受動スカラー場","subitem_subject_scheme":"Other"},{"subitem_subject":"渦度","subitem_subject_scheme":"Other"},{"subitem_subject":"渦管領域","subitem_subject_scheme":"Other"},{"subitem_subject":"シート状空間領域","subitem_subject_scheme":"Other"},{"subitem_subject":"固有ベクトル","subitem_subject_scheme":"Other"},{"subitem_subject":"歪み速度","subitem_subject_scheme":"Other"},{"subitem_subject":"テンソル場","subitem_subject_scheme":"Other"},{"subitem_subject":"空間格子点","subitem_subject_scheme":"Other"},{"subitem_subject":"decaying isotropic turbulent flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"direct numerical simulation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"numerical wind tunnel program","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"flow structure","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"temperature gradient","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"passive scalar field","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vorticity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"worm like region","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"sheet like spatial region","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"eigen vector","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"strain rate","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tensor field","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"spatial mesh point","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":"直接数値シミュレーションに基づく乱流構造の数値解析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"直接数値シミュレーションに基づく乱流構造の数値解析"}]},"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":"36794","relation_version_is_last":true,"title":["直接数値シミュレーションに基づく乱流構造の数値解析"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:31:27.276422+00:00"}