{"created":"2023-06-20T15:08:23.140734+00:00","id":37820,"links":{},"metadata":{"_buckets":{"deposit":"f625bb2f-e63e-4ac8-8685-d4aae3c0cf2a"},"_deposit":{"created_by":1,"id":"37820","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"37820"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00037820","sets":["1887:1891","1896:1898:1913:1915"]},"author_link":["430471","430469","430472","430473","430474","430470"],"item_5_alternative_title_2":{"attribute_name":"その他のタイトル（英）","attribute_value_mlt":[{"subitem_alternative_title":"Numerical simulation of isotropic turbulence using NWT"}]},"item_5_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1994-10","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"64","bibliographicPageStart":"61","bibliographicVolumeNumber":"25","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_16":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"航空宇宙技術研究所に導入された新しい並列計算機「数値風洞」(NWT)を用いて一様等方性乱流の直接数値シミュレーション(DNS)を行った。空間格子数512{3}をもつDNSをNWT上の128の要素プロセッサを用いて行うことができ、その場合の性能は53GFLOPSに達する。ナビエ･ストークス方程式をフーリエスペクトル法で解くDNSにより完全に発達した乱流場の速度および温度を得た。それにより得られたエネルギースペクトルは、その中にk{-5/3}法則の領域をもつ。確率分布関数は、速度についてはガウス分布であるが、速度勾配については指数分布をする。空間における渦度の集中はチューブ状に発生し、温度勾配のそれはシート状である。","subitem_description_type":"Abstract"}]},"item_5_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Direct Numerical Simulation (DNS) of homogeneous isotropic turbulence is made using the Numerical Wind Tunnel (NWT), a new parallel computer introduced to NAL(National Aerospace Laboratory) last year. The DNS having 512(exp 3) mesh points in space can be conducted by the NWT with 128 processor element, whose performance attains to 53 G Floating-point Operations Per Second (FLOPS) for the DNS. The fully developed turbulent fields, velocity and temperature, are obtained by the DNS which is used the Fourier spectral method for the calculation of the Navier-Stokes equation. The energy spectrum obtained has the k(exp -5/3) power law region in it. The probability distribution functions show the Gaussian distribution for the velocity, but exponential functions for the velocity derivatives. The intense vorticity concentrates into various short tube like regions, but the temperature into sheet like regions in space.","subitem_description_type":"Other"}]},"item_5_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: AA0004172017","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-25","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":"航空宇宙技術研究所"},{"subitem_text_value":"電気通信大学"},{"subitem_text_value":"電気通信大学"}]},"item_5_text_7":{"attribute_name":"著者所属（英）","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"National Aerospace Laboratory"},{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications"},{"subitem_text_language":"en","subitem_text_value":"University of Electro-Communications"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"山本, 稀義"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"細川, 巌"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"生出, 伸一"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Yamamoto, Kiyoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Hosokawa, Iwao","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Oide, Shinichi","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":"nalsp0025017.pdf","filesize":[{"value":"375.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"nalsp0025017.pdf","url":"https://jaxa.repo.nii.ac.jp/record/37820/files/nalsp0025017.pdf"},"version_id":"ea9b133e-ae77-4900-b550-22dd07c24456"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"一様等方性乱流","subitem_subject_scheme":"Other"},{"subitem_subject":"乱流シミュレーション","subitem_subject_scheme":"Other"},{"subitem_subject":"DNS","subitem_subject_scheme":"Other"},{"subitem_subject":"直接数値シミュレーション","subitem_subject_scheme":"Other"},{"subitem_subject":"並列コンピュータ性能","subitem_subject_scheme":"Other"},{"subitem_subject":"ナビエ･ストークス方程式数値解","subitem_subject_scheme":"Other"},{"subitem_subject":"フーリエスペクトル法","subitem_subject_scheme":"Other"},{"subitem_subject":"乱流エネルギースペクトル","subitem_subject_scheme":"Other"},{"subitem_subject":"乱流速度勾配","subitem_subject_scheme":"Other"},{"subitem_subject":"速度確率分布関数","subitem_subject_scheme":"Other"},{"subitem_subject":"乱流渦度パターン","subitem_subject_scheme":"Other"},{"subitem_subject":"homogeneous isotropicl turbulence","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"turbulence simulation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"DNS","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"direct numerical simulation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"parallel computer performance","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Navier Stokes equation solution","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Fourier spectral method","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"turbulence energy spectrum","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"turbulent velocity gradient","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"velocity probability distribution function","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"turbulent vorticity pattern","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":"NWTによる等方性乱流の数値シミュレーション","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"NWTによる等方性乱流の数値シミュレーション"}]},"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":"37820","relation_version_is_last":true,"title":["NWTによる等方性乱流の数値シミュレーション"],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T22:48:56.671694+00:00"}