{"created":"2023-06-20T15:08:05.920204+00:00","id":37485,"links":{},"metadata":{"_buckets":{"deposit":"f60c4f8c-2641-4a57-8726-8d378ec04caf"},"_deposit":{"created_by":1,"id":"37485","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"37485"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00037485","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["481044","481046","481041","481045","481042","481043"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Toward numerical simulation of rotating stall inception in compressor rotor: Unsteady behavior of tip leakage vortex at near-stall operating condition"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-12","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"334","bibliographicPageStart":"329","bibliographicVolumeNumber":"44","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 16-18 Jun. 1999 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 16-18 Jun. 1999 Tokyo Japan","subitem_description_type":"Other"}]},"item_5_description_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"翼端漏れ渦の崩壊を中程度の翼面荷重を持った低速軸流圧縮機ロータの失速点近傍で調べた。ロータ中の翼端漏れ渦の崩壊による流れの非定常挙動を調べるために、TVD(全変動減少)法を用いた高解像度風上スキームに基づく非定常ナビエ・ストークス流れソルバによりシミュレーションを実施した。ロータの流路中の複雑な流れ場を調べるために、渦の同定のための半解析的方法と無次元ヘリシティを適用した。これらの可視化法により翼端漏れ流れの構造と非定常挙動が明らかになった。ロータの流路中に、失速点近傍において翼端漏れ渦の渦巻き状の崩壊が起こることが、このシミュレーションにより示された。翼端漏れ渦コアにおける流れはほとんどよどみ状態まで減速されて、翼端漏れ渦コアのピッチ方向への大きな蛇行が崩壊開始点の下流に現れる。結果として、ロータの流路前部で、渦コアに巻きついていた漏れ流線が流路後部では膨張することが観測された。翼端漏れ渦は、その崩壊が流路の中程で起こるため、流路の前部で時間と共にねじれて激しく回転する。漏れ渦の非定常挙動により、漏れ渦コアと隣接翼の正圧面境界層との間に周期的な干渉が生じる。さらに、竜巻に似た翼正圧面に足を持った、翼正圧面にほぼ垂直な渦が非定常干渉により形成される。実験結果において失速点近傍に観測された翼正圧面付近の大きな圧力変動は、翼漏れ渦のスパイラルタイプの崩壊による非定常過程に起因することを見出した。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"The breakdown of the tip leakage vortex has been investigated at near-stall condition in a low-speed axial compressor rotor with moderate blade loading. The unsteady flow behavior due to breakdown of tip leakage vortex in the rotor has been simulated by the unsteady Navier-Stokes flow solver based on the high-resolution upwind scheme using the TVD (Total Variation Diminishing) formulation. The semi-analytic method for identifying vortex and normalized helicity were applied to investigate the complicated flow field inside the rotor passage. These visualization techniques revealed clearly the structure and unsteady behavior of tip leakage flow. The simulation shows that the spiral-type breakdown of the tip leakage vortex occurs inside the rotor passage at the near-stall condition. The flow in the tip leakage vortex core is decelerated almost to stagnation near the middle part of passage and the large twist of tip leakage vortex core in the pitchwise direction appears downstream of the breakdown onset. As a result, it is observed that the leakage streamlines tightly spiral around the vortex core at the fore part of the rotor passage, expand at the aft part of the passage. The tip leakage vortex twists and turns violently with time at the aft part of the passage because its breakdown occurs near the middle of the passage. The periodic interaction between the leakage vortex core and the pressure surface boundary layer of the adjacent blade is caused by the unsteady behavior of leakage vortex. Furthermore, the vortex nearly perpendicular to the blade pressure surface, which is similar to tornado and has a leg on the blade pressure surface, is formed by the unsteady interaction. It is found that the large pressure fluctuation near the blade pressure surface, which has been observed at the near-stall condition in experimental result, results from the unsteady process due to the spiral-type breakdown of tip leakage vortex.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0001961052","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-44","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":"九州大学 大学院工学研究科"},{"subitem_text_value":"九州大学 大学院工学研究科"},{"subitem_text_value":"九州大学 大学院工学研究科"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Kyushu University Graduate School of Engineering"},{"subitem_text_language":"en","subitem_text_value":"Kyushu University Graduate School of Engineering"},{"subitem_text_language":"en","subitem_text_value":"Kyushu University Graduate School of Engineering"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"才木, 一寿"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"古川, 雅人"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"井上, 雅弘"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Saiki, Kazuhisa","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Furukawa, Masato","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Inoue, Masahiro","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":"nalsp0044052.pdf","filesize":[{"value":"2.6 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0044052.pdf","url":"https://jaxa.repo.nii.ac.jp/record/37485/files/nalsp0044052.pdf"},"version_id":"526a3eca-5a99-44a8-88c8-74f112001ca1"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"圧縮機ロータ","subitem_subject_scheme":"Other"},{"subitem_subject":"旋回失速","subitem_subject_scheme":"Other"},{"subitem_subject":"失速点近傍","subitem_subject_scheme":"Other"},{"subitem_subject":"翼端漏れ渦","subitem_subject_scheme":"Other"},{"subitem_subject":"渦同定","subitem_subject_scheme":"Other"},{"subitem_subject":"非定常流れ挙動","subitem_subject_scheme":"Other"},{"subitem_subject":"低速軸流圧縮機","subitem_subject_scheme":"Other"},{"subitem_subject":"渦崩壊","subitem_subject_scheme":"Other"},{"subitem_subject":"TVD法","subitem_subject_scheme":"Other"},{"subitem_subject":"全変動減少法","subitem_subject_scheme":"Other"},{"subitem_subject":"高解像度風上スキーム","subitem_subject_scheme":"Other"},{"subitem_subject":"ナビエ・ストークスコード","subitem_subject_scheme":"Other"},{"subitem_subject":"無次元ヘリシティ","subitem_subject_scheme":"Other"},{"subitem_subject":"渦巻き形","subitem_subject_scheme":"Other"},{"subitem_subject":"compressor rotor","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"rotating stall","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"near stall point","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"tip leakage vortex","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vortex identification","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"unsteady flow behavior","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"low speed axial compressor","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"vortex breakdown","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"TVD method","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"total variation diminishing method","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"high resolution upwind scheme","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Navier Stokes code","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"normalized helicity","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"spiral type","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":"圧縮機における旋回失速初生の数値シミュレーションに向けて:失速点近傍における翼端漏れ渦の非定常挙動","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"圧縮機における旋回失速初生の数値シミュレーションに向けて:失速点近傍における翼端漏れ渦の非定常挙動"}]},"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":"37485","relation_version_is_last":true,"title":["圧縮機における旋回失速初生の数値シミュレーションに向けて:失速点近傍における翼端漏れ渦の非定常挙動"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T21:17:46.748945+00:00"}