{"created":"2023-06-20T15:07:57.127336+00:00","id":37326,"links":{},"metadata":{"_buckets":{"deposit":"4a2dbd5d-dd0d-4c5a-8bea-b593d821e185"},"_deposit":{"created_by":1,"id":"37326","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"37326"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00037326","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["480142","480143"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Shock enhanced mixing in shear flow"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-02","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"82","bibliographicPageStart":"77","bibliographicVolumeNumber":"41","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 24-26 Jun. 1998 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 24-26 Jun. 1998 Tokyo Japan","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"2次元剪断流中を伝播する衝撃波によって生ずる傾圧トルクが燃料-空気混合促進におよぼす影響を数値シミュレーションによって解析した。3種類の科学種(空気、二酸化炭素、ヘリウム)を空気の主流に亜音速噴射し乱剪断流を生ずる。衝撃波が剪断流を通過すると、密度勾配と圧力勾配の干渉により傾圧トルクが生じる。剪断流の混合特性を表すため2方程式q-ω乱流モデルをナビエ・ストークス方程式および主流-噴流化学種保存方程式とともに支配方程式として採用した。数値計算法には風上TVD(全変動減少)およびLU-ADI(Lower-Upper Alternating Direction Implicit)陰解法を用いた。シミュレーション結果を比較すると空気も二酸化炭素の噴射も衝撃波強度に関わらず混合促進が見らなかった。一方、ヘリウム噴射の場合のみ衝撃波背後の噴流中心線上に一対の大規模渦構造が生じ、平均濃度比によって定義される混合度は衝撃波強度の増加に伴い大きく改善された。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The effects of baroclinic torque, which is caused by shock passing through two dimensional shear flows, on fuel-air mixing enhancement are investigated by a numerical simulation technique. Subsonic injection of three kinds of chemical species (air, carbon dioxide, helium) into a main air stream constructs each individual turbulent shear flow. After a normal shock wave goes through the shear flow, the interaction between concentration gradient and pressure difference generates baroclinic torque. To describe mixing characteristics of turbulent shear flow the q-omega type two equation turbulent model is adopted with N-S (Navier-Stokes) equation and main jet species conservation equations as governing equations, and both upwind TVD (Total Variation Diminishing) and LU-ADI (Lower-Upper Alternating Direction Implicit) methods are employed as numerical solver. The comparison of all simulation results show that neither air nor carbon dioxide injection case indicates obvious mixing promotion for almost all range of shock strength. On the other hand only in helium jet case a pair of large scale vortexes appears on jet center line behind shock and the mixing magnitude defined by average concentration ratio is extremely improved with an increase of shock strength.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0001958012","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-41","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":"防衛大学校"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Defense Academy"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"metadata only access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_14cb"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"小幡, 茂男"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Obata, Shigeo","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"衝撃波","subitem_subject_scheme":"Other"},{"subitem_subject":"剪断流","subitem_subject_scheme":"Other"},{"subitem_subject":"傾圧トルク","subitem_subject_scheme":"Other"},{"subitem_subject":"数値シミュレーション","subitem_subject_scheme":"Other"},{"subitem_subject":"ナビエ・ストークス方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"化学種保存方程式","subitem_subject_scheme":"Other"},{"subitem_subject":"燃料-空気混合促進","subitem_subject_scheme":"Other"},{"subitem_subject":"TVD","subitem_subject_scheme":"Other"},{"subitem_subject":"全変動減少","subitem_subject_scheme":"Other"},{"subitem_subject":"LU-ADI","subitem_subject_scheme":"Other"},{"subitem_subject":"上下交互方向陰的差分法","subitem_subject_scheme":"Other"},{"subitem_subject":"shock wave","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"shear flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"baroclinic torque","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"numerical simulation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Navier Stokes equation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"species conservation equation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"fuel air mixing enhancement","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"TVD","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"total variation diminishing","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"LU ADI","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"lower upper alternating direction implicit method","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":"衝撃波入射による剪断流混合促進","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"衝撃波入射による剪断流混合促進"}]},"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":"37326","relation_version_is_last":true,"title":["衝撃波入射による剪断流混合促進"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:21:50.323890+00:00"}