{"_buckets": {"deposit": "348f5b43-bfbe-4667-a31e-4d269cf4e6a9"}, "_deposit": {"id": "2003178", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "2003178"}, "status": "published"}, "_oai": {"id": "oai:u-ryukyu.repo.nii.ac.jp:02003178", "sets": ["1642837867211", "1642838406845"]}, "author_link": [], "item_1617186331708": {"attribute_name": "Title", "attribute_value_mlt": [{"subitem_1551255647225": "はく離・再付着流れの非定常構造に関する実験的研究", "subitem_1551255648112": "ja"}, {"subitem_1551255647225": "Experimental Study on Unsteady Stuctures in a Reattaching Separated Flow Field", "subitem_1551255648112": "en"}]}, "item_1617186419668": {"attribute_name": "Creator", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "照屋, 功", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "具志堅, 貴之", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "山里, 栄昭", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "伊良部, 邦夫", "creatorNameLang": "ja"}]}, {"creatorNames": [{"creatorName": "Teruya, Isao", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Gushiken, Takayuki", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yamazato, Eisho", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Irabu, Kunio", "creatorNameLang": "en"}]}]}, "item_1617186476635": {"attribute_name": "Access Rights", "attribute_value_mlt": [{"subitem_1522299639480": "open access", "subitem_1600958577026": "http://purl.org/coar/access_right/c_abf2"}]}, "item_1617186609386": {"attribute_name": "Subject", "attribute_value_mlt": [{"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Backward Facing Step"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Separation"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Reattachment"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Unsteady Structure"}, {"subitem_1522299896455": "en", "subitem_1522300014469": "Other", "subitem_1523261968819": "Frequency Analysis"}]}, "item_1617186626617": {"attribute_name": "Description", "attribute_value_mlt": [{"subitem_description": "Separated and reattaching flow fields observed in engineering equipments are extremely complex because of its unsteadiness and three-dimensional structure. It is well known that of organized large-scale vortical structures appear in the separated shear layer.\\nThe purpose of this study is to explore experimentally the large-scale vortices in a separated and reattaching shear layer evolving from a backward facing step edge and to find the width of the free stream and the periodicity of motion of large-scale vortices.\\nIn this investigation, the reattachment length of the shear layer was determined based on the measurements with a thermal-tuft probe. The wall pressure and the velocity fluctuations were measured with a pressure sensor and an I type hot wire probe respectively. Those data were analyzed by a FFT analyzer.\\nThe obtained results are described as follows. (1) The reattachment length increases with the expansion ratio, W_2/W_1. When the distance X in the flow direction is normalized by the width of reattachment region ΔX_R, the forward flow fraction distributions at different expansion ratio, W_2/W_1, fall on one curve near the reattachment region. (2) According to analysis of the frequency of pressure fluctuations, the frequency of large-scale vortices is f・H/U_0=0.7, where H is height of the step. f is frequency and U_0 is velocity of the main flow. (3) the peak of power spectrum of the velocity fluctuations is f・H/U_0=0.3~0.5.", "subitem_description_type": "Other"}, {"subitem_description": "紀要論文", "subitem_description_type": "Other"}]}, "item_1617186643794": {"attribute_name": "Publisher", "attribute_value_mlt": [{"subitem_1522300295150": "ja", "subitem_1522300316516": "琉球大学工学部"}]}, "item_1617186702042": {"attribute_name": "Language", "attribute_value_mlt": [{"subitem_1551255818386": "jpn"}]}, "item_1617186783814": {"attribute_name": "Identifier", "attribute_value_mlt": [{"subitem_identifier_type": "HDL", "subitem_identifier_uri": "http://hdl.handle.net/20.500.12000/1998"}]}, "item_1617186920753": {"attribute_name": "Source Identifier", "attribute_value_mlt": [{"subitem_1522646500366": "ISSN", "subitem_1522646572813": "0389-102X"}, {"subitem_1522646500366": "NCID", "subitem_1522646572813": "AN0025048X"}]}, "item_1617186941041": {"attribute_name": "Source Title", "attribute_value_mlt": [{"subitem_1522650068558": "ja", "subitem_1522650091861": "琉球大学工学部紀要"}]}, "item_1617187056579": {"attribute_name": "Bibliographic Information", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "1992-09", "bibliographicIssueDateType": "Issued"}, "bibliographicIssueNumber": "44", "bibliographicPageEnd": "20", "bibliographicPageStart": "13"}]}, "item_1617258105262": {"attribute_name": "Resource Type", "attribute_value_mlt": [{"resourcetype": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_1617265215918": {"attribute_name": "Version Type", "attribute_value_mlt": [{"subitem_1522305645492": "VoR", "subitem_1600292170262": "http://purl.org/coar/version/c_970fb48d4fbd8a85"}]}, "item_1617605131499": {"attribute_name": "File", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_access", "download_preview_message": "", "file_order": 0, "filename": "No44p13.pdf", "future_date_message": "", "is_thumbnail": false, "mimetype": "", "size": 0, "url": {"objectType": "fulltext", "url": "https://u-ryukyu.repo.nii.ac.jp/record/2003178/files/No44p13.pdf"}, "version_id": "fa1dd976-755e-4d41-8eb6-f4e75c136873"}]}, "item_title": "はく離・再付着流れの非定常構造に関する実験的研究", "item_type_id": "15", "owner": "1", "path": ["1642837867211", "1642838406845"], "permalink_uri": "http://hdl.handle.net/20.500.12000/1998", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2007-09-16"}, "publish_date": "2007-09-16", "publish_status": "0", "recid": "2003178", "relation": {}, "relation_version_is_last": true, "title": ["はく離・再付着流れの非定常構造に関する実験的研究"], "weko_shared_id": -1}
http://hdl.handle.net/20.500.12000/1998
http://hdl.handle.net/20.500.12000/1998