{"created":"2023-06-20T14:39:24.651905+00:00","id":6159,"links":{},"metadata":{"_buckets":{"deposit":"7b7d2605-0a6f-4e0f-b98d-238b4b9e2ff4"},"_deposit":{"created_by":1,"id":"6159","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"6159"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00006159","sets":["1887:1891","9:789:1031:1052"]},"author_link":["30848","30847"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Influences of artificial viscosity terms on unsteady calculation of low-speed flowfield"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2006-02-28","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"161","bibliographicPageStart":"156","bibliographicVolumeNumber":"JAXA-SP-05-017","bibliographic_titles":[{"bibliographic_title":"宇宙航空研究開発機構特別資料: 航空宇宙数値シミュレーション技術シンポジウム2005論文集"},{"bibliographic_title":"JAXA Special Publication: Proceedings of Aerospace Numerical Simulation Symposium 2005","bibliographic_titleLang":"en"}]}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"When computational simulation for low Mach number flows is conducted with a compressible flow solver, its performance deteriorates in terms of both convergence speed and accuracy. The deterioration of accuracy is caused by excessive artificial viscosity in low Mach flow regions. In order to improve convergence of an iterative method, a local preconditioning method for low speed flow is frequently used. The preconditioning method minimizes the wave speed range between a particle wave and an acoustic wave. When the preconditioning method is applied to an upwind scheme, its artificial viscous terms need to be modified by preconditioning matrix. This modification cures the accuracy problem of calculated flows in the low-Mach flow regions. In this paper, the effects of the preconditioning method on unsteady calculation of flows around an airfoil are discussed.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0049212026","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: JAXA-SP-05-017","subitem_description_type":"Other"}]},"item_5_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"宇宙航空研究開発機構"}]},"item_5_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Japan Aerospace Exploration Agency (JAXA)"}]},"item_5_source_id_21":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1349-113X","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":"AA11984031","subitem_source_identifier_type":"NCID"}]},"item_5_text_6":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"宇宙航空研究開発機構"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Japan Aerospace Exploration Agency"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"向井, 純一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Mukai, Junichi","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":"2020-01-16"}],"displaytype":"detail","filename":"49212026.pdf","filesize":[{"value":"1.9 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"49212026.pdf","url":"https://jaxa.repo.nii.ac.jp/record/6159/files/49212026.pdf"},"version_id":"ca6a53e3-4bee-446a-9848-ad69ffa8b465"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"非定常計算","subitem_subject_scheme":"Other"},{"subitem_subject":"低マッハ数流れ","subitem_subject_scheme":"Other"},{"subitem_subject":"翼形","subitem_subject_scheme":"Other"},{"subitem_subject":"圧縮性流れ","subitem_subject_scheme":"Other"},{"subitem_subject":"前処理法","subitem_subject_scheme":"Other"},{"subitem_subject":"圧力分布","subitem_subject_scheme":"Other"},{"subitem_subject":"数値解析","subitem_subject_scheme":"Other"},{"subitem_subject":"アルゴリズム","subitem_subject_scheme":"Other"},{"subitem_subject":"比較","subitem_subject_scheme":"Other"},{"subitem_subject":"収束","subitem_subject_scheme":"Other"},{"subitem_subject":"精度","subitem_subject_scheme":"Other"},{"subitem_subject":"unsteady calculation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"low Mach number flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"airfoil","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"compressible flow","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"preconditioning method","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"pressure distribution","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"numerical analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"algorithm","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"comparison","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"convergence","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"accuracy","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":"低速流れの非定常計算における人工粘性の影響","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"低速流れの非定常計算における人工粘性の影響"}]},"item_type_id":"5","owner":"1","path":["1052","1891"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"6159","relation_version_is_last":true,"title":["低速流れの非定常計算における人工粘性の影響"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-21T08:01:05.461273+00:00"}