{"created":"2023-05-15T15:25:21.416471+00:00","id":12956,"links":{},"metadata":{"_buckets":{"deposit":"ab7053df-651a-4528-a95e-06b80d037532"},"_deposit":{"created_by":3,"id":"12956","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"12956"},"status":"published"},"_oai":{"id":"oai:sucra.repo.nii.ac.jp:00012956","sets":["94:426"]},"author_link":["16485","20468"],"item_119_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2007","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"9-10","bibliographicPageEnd":"710","bibliographicPageStart":"694","bibliographicVolumeNumber":"39","bibliographic_titles":[{"bibliographic_title":"FLUID DYNAMICS RESEARCH"}]}]},"item_119_date_31":{"attribute_name":"作成日","attribute_value_mlt":[{"subitem_date_issued_datetime":"2007-11-09","subitem_date_issued_type":"Created"}]},"item_119_description_17":{"attribute_name":"関連サイト","attribute_value_mlt":[{"subitem_description":"http://www.sciencedirect.com/science/journal/01695983 | http://www.sciencedirect.com/science/journal/01695983","subitem_description_type":"Other"}]},"item_119_description_19":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The characteristics of flow structures around a colony-type emergent roughness model, hereafter called 'colony model'. mounted on a flat plate in uniform flow and the drag coefficient C-dc for the colony model are investigated by flow visualization, spectral analysis, velocity measurement and drag force measurement. Two types of colony models. each comprising seven equally spaced cylinders with grid or staggered arrangement are mounted on a water flume bed. The flow structure around the colony model changes depending on LID and G/D (L: space between neighboring cylinders, D: diameter of a cylinder, G: space between cylinders in the cross-stream direction). Two types of flow structures. a large-scale Karman vortex street (LKV) behind the colony models and a primitive Karman vortex street (PKV) behind the individual cylinders, are generated. LKV is formed along the shear layer for G/D < 0.4. When G/D > 1.8 PKV behind each cylinder is stably formed because of the decrease in difference between the velocity through the colony model and that of the detour flow. The velocity through the colony model, which plays a key role for the phenomenon change, strongly increases with G/D at first and then gradually. The tendency of the velocity curve changes around G/D = 1.8 for each arrangement. It almost coincides with the initiation of the formation of PKV. On the other hand, Cdc for the colony model increases in the range of 0.08 < G/D < 0.75 (0.25 < LID < 1) and 0 < G/D < I (I < LID < 3) for the grid and staggered arrangements, respectively. The changing point of the tendency in the C-dc, curve is located in the middle of the transition zone for the two vortex(0.4 < G/D < 1.8). Moreover, the C-dc value for the colony model is nearly constant, independent of the two arrangements, when G/D > 1.8. (c) 2007 The Japan Society of Fluid Mechanics and Elsevier B.V. All rights reserved.","subitem_description_type":"Abstract"}]},"item_119_description_29":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"subitem_description":"text","subitem_description_type":"Other"}]},"item_119_description_30":{"attribute_name":"フォーマット","attribute_value_mlt":[{"subitem_description":"application/pdf","subitem_description_type":"Other"}]},"item_119_publisher_11":{"attribute_name":"出版者名","attribute_value_mlt":[{"subitem_publisher":"ELSEVIER SCIENCE BV"}]},"item_119_relation_16":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isVersionOf","subitem_relation_type_id":{"subitem_relation_type_id_text":"info:doi/10.1016/j.fluiddyn.2007.06.001","subitem_relation_type_select":"DOI"}}]},"item_119_source_id_14":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"01695983","subitem_source_identifier_type":"ISSN"}]},"item_119_text_27":{"attribute_name":"版","attribute_value_mlt":[{"subitem_text_value":"[著者版]"}]},"item_119_text_3":{"attribute_name":"著者 ローマ字","attribute_value_mlt":[{"subitem_text_value":"Takemura, Takeshi"},{"subitem_text_value":"Tanaka, Norio"}]},"item_119_text_32":{"attribute_name":"アイテムID","attribute_value_mlt":[{"subitem_text_value":"A1002294"}]},"item_119_text_4":{"attribute_name":"著者 所属","attribute_value_mlt":[{"subitem_text_value":"&EMPTY&"},{"subitem_text_value":"埼玉大学大学院理工学研究科環境科学・社会基盤部門"}]},"item_119_text_5":{"attribute_name":"著者 所属(別言語)","attribute_value_mlt":[{"subitem_text_value":"&EMPTY&"},{"subitem_text_value":"Department of Civil and Environmental Engineering, Saitama University"}]},"item_119_text_9":{"attribute_name":"年月次","attribute_value_mlt":[{"subitem_text_value":"2007-9-10"}]},"item_119_version_type_28":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_ab4af688f83e57aa","subitem_version_type":"AM"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Takemura, Takeshi"},{"creatorName":"タケムラ, タケシ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 規夫"},{"creatorName":"タナカ, ノリオ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-01-24"}],"displaytype":"detail","filename":"A1002294.pdf","filesize":[{"value":"925.1 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"A1002294.pdf","url":"https://sucra.repo.nii.ac.jp/record/12956/files/A1002294.pdf"},"version_id":"374a9ebc-e9c7-4ff0-9ad2-f794eaa7cb88"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"colony type vegetation","subitem_subject_scheme":"Other"},{"subitem_subject":"drag coefficient","subitem_subject_scheme":"Other"},{"subitem_subject":"strouhal number","subitem_subject_scheme":"Other"},{"subitem_subject":"flow structure","subitem_subject_scheme":"Other"},{"subitem_subject":"grid or staggered arrangement","subitem_subject_scheme":"Other"},{"subitem_subject":"flow visualization","subitem_subject_scheme":"Other"},{"subitem_subject":"PIV","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Flow structures and drag characteristics of a colony-type emergent roughness model mounted on a flat plate in uniform flow","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Flow structures and drag characteristics of a colony-type emergent roughness model mounted on a flat plate in uniform flow"}]},"item_type_id":"119","owner":"3","path":["426"],"pubdate":{"attribute_name":"公開日","attribute_value":"2007-11-09"},"publish_date":"2007-11-09","publish_status":"0","recid":"12956","relation_version_is_last":true,"title":["Flow structures and drag characteristics of a colony-type emergent roughness model mounted on a flat plate in uniform flow"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-05-15T19:44:50.575835+00:00"}