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It\u0027s found that when the attack angle a is small, the periodic fluctuating phenomenon emerges in the wake for both type blades. This phenomenon is the Karman vortex street which generates from the separation of a laminar boundary layer upstream of the trailing edge and from the formation of a dead air region. At NACA0008 blade the frequency of the Karman vortex formation falls with the attack angle increasing, because the separation of the laminar boundary layer occurs mainly on the suction surface and the dead air region becomes large as a attack angle increases. At NACA0015 blade, the frequency of the Karman vortex formation increases with the attack angle in\u0027creasing, because the separation occurs mainly on the pressure surface and the dead air region becomes small as the attack angle increases. When the attack angle more increases, the Karman vortex street disappers for both blades because of the boundary layer on both surface of the blade attached before the trailing edge and no dead air region formed. When the attack angle is very large, the flow of suction side separates near the leading edge and the large dead air region forms so the Karman vortex street emerges and it\u0027s frequersy is very low.", "subitem_description_type": "Abstract"}]}, "item_3_description_64": {"attribute_name": "引用", "attribute_value_mlt": [{"subitem_description": "長崎大学工学部研究報告, 21(35), pp.1-8; 1990", "subitem_description_type": "Other"}]}, "item_3_full_name_3": {"attribute_name": "著者別名", "attribute_value_mlt": [{"nameIdentifiers": [{"nameIdentifier": "52115", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Hayashi, Hidechito"}]}, {"nameIdentifiers": [{"nameIdentifier": "52116", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Ikeda, Masahiro"}]}, {"nameIdentifiers": [{"nameIdentifier": "52117", "nameIdentifierScheme": "WEKO"}], "names": [{"name": "Kodama, Yoshio"}]}]}, "item_3_publisher_33": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "長崎大学工学部"}]}, "item_3_source_id_10": {"attribute_name": "書誌レコードID", "attribute_value_mlt": [{"subitem_source_identifier": "AN00178418", "subitem_source_identifier_type": "NCID"}]}, "item_3_source_id_7": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "02860902", "subitem_source_identifier_type": "ISSN"}]}, "item_3_source_id_8": {"attribute_name": "EISSN", "attribute_value_mlt": [{"subitem_source_identifier": "18805574", "subitem_source_identifier_type": "ISSN"}]}, "item_3_text_63": {"attribute_name": "出版者別言語", "attribute_value_mlt": [{"subitem_text_value": "Faculty of Engineering, Nagasaki University"}]}, "item_3_version_type_16": {"attribute_name": "著者版フラグ", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "林, 秀千人"}], "nameIdentifiers": [{"nameIdentifier": "52112", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "池田, 昌浩"}], "nameIdentifiers": [{"nameIdentifier": "52113", "nameIdentifierScheme": "WEKO"}]}, {"creatorNames": [{"creatorName": "児玉, 好雄"}], "nameIdentifiers": [{"nameIdentifier": "52114", "nameIdentifierScheme": "WEKO"}]}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2020-12-22"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "kogaku21_35_01.pdf", "filesize": [{"value": "4.1 MB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_free", "mimetype": "application/pdf", "size": 4099999.9999999995, "url": {"label": "kogaku21_35_01.pdf", "url": "https://nagasaki-u.repo.nii.ac.jp/record/14334/files/kogaku21_35_01.pdf"}, "version_id": "ef9578fd-d5d3-4849-90c4-3642a5ea0486"}]}, "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": "departmental bulletin paper", "resourceuri": "http://purl.org/coar/resource_type/c_6501"}]}, "item_title": "一様流中に置かれた翼まわりの流れの周期的変動現象に関する実験的研究", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "一様流中に置かれた翼まわりの流れの周期的変動現象に関する実験的研究"}]}, "item_type_id": "3", "owner": "2", "path": ["1203"], "permalink_uri": "http://hdl.handle.net/10069/24316", "pubdate": {"attribute_name": "公開日", "attribute_value": "2010-10-21"}, "publish_date": "2010-10-21", "publish_status": "0", "recid": "14334", "relation": {}, "relation_version_is_last": true, "title": ["一様流中に置かれた翼まわりの流れの周期的変動現象に関する実験的研究"], "weko_shared_id": -1}
一様流中に置かれた翼まわりの流れの周期的変動現象に関する実験的研究
http://hdl.handle.net/10069/24316
http://hdl.handle.net/10069/2431670593ad6-5721-4e35-9f3d-151df70a325b
名前 / ファイル | ライセンス | アクション |
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kogaku21_35_01.pdf (4.1 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-10-21 | |||||
タイトル | ||||||
タイトル | 一様流中に置かれた翼まわりの流れの周期的変動現象に関する実験的研究 | |||||
言語 | ||||||
言語 | jpn | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
林, 秀千人
× 林, 秀千人× 池田, 昌浩× 児玉, 好雄 |
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著者別名 | ||||||
姓名 | Hayashi, Hidechito | |||||
著者別名 | ||||||
姓名 | Ikeda, Masahiro | |||||
著者別名 | ||||||
姓名 | Kodama, Yoshio | |||||
その他のタイトル | ||||||
その他のタイトル | Experimental Investigation of the Periodic Fluctuating Flow around NACA0008 and NACA0015 Blades in Uniform Inflow. | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The mechanism of the fluctuating phenomena in the wake was investigated to NACA0008 and NACA0015 blades with experimentally. It's found that when the attack angle a is small, the periodic fluctuating phenomenon emerges in the wake for both type blades. This phenomenon is the Karman vortex street which generates from the separation of a laminar boundary layer upstream of the trailing edge and from the formation of a dead air region. At NACA0008 blade the frequency of the Karman vortex formation falls with the attack angle increasing, because the separation of the laminar boundary layer occurs mainly on the suction surface and the dead air region becomes large as a attack angle increases. At NACA0015 blade, the frequency of the Karman vortex formation increases with the attack angle in'creasing, because the separation occurs mainly on the pressure surface and the dead air region becomes small as the attack angle increases. When the attack angle more increases, the Karman vortex street disappers for both blades because of the boundary layer on both surface of the blade attached before the trailing edge and no dead air region formed. When the attack angle is very large, the flow of suction side separates near the leading edge and the large dead air region forms so the Karman vortex street emerges and it's frequersy is very low. | |||||
書誌情報 |
長崎大学工学部研究報告 en : Reports of the Faculty of Engineering, Nagasaki University 巻 21, 号 35, p. 1-8, 発行日 1990-07 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 02860902 | |||||
EISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18805574 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00178418 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | 長崎大学工学部 | |||||
出版者別言語 | ||||||
Faculty of Engineering, Nagasaki University | ||||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 長崎大学工学部研究報告, 21(35), pp.1-8; 1990 |