WEKO3
アイテム
{"_buckets": {"deposit": "0171c20c-c2c1-4471-a5da-33fa88624043"}, "_deposit": {"created_by": 22, "id": "2931", "owners": [22], "pid": {"revision_id": 0, "type": "depid", "value": "2931"}, "status": "published"}, "_oai": {"id": "oai:oist.repo.nii.ac.jp:00002931", "sets": ["241"]}, "author_link": [], "control_number": "2931", "item_10006_creator_2": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "服部 優菜", "creatorNameLang": "ja"}]}]}, "item_10006_creator_3": {"attribute_name": "著者(英)", "attribute_type": "creator", "attribute_value_mlt": [{"creatorAffiliations": [{"affiliationNames": [{"affiliationNameLang": "en"}]}], "creatorNames": [{"creatorName": "Yuna, Hattori", "creatorNameLang": "en"}]}]}, "item_10006_date_granted_11": {"attribute_name": "Degree Conferral Date", "attribute_value_mlt": [{"subitem_dategranted": "2023-03-31"}]}, "item_10006_degree_grantor_9": {"attribute_name": "Degree Conferrral Institution", "attribute_value_mlt": [{"subitem_degreegrantor": [{"subitem_degreegrantor_name": "Okinawa Institute of Science and Technology Graduate University"}], "subitem_degreegrantor_identifier": [{"subitem_degreegrantor_identifier_name": "38005", "subitem_degreegrantor_identifier_scheme": "kakenhi"}]}]}, "item_10006_degree_name_8": {"attribute_name": "Degree", "attribute_value_mlt": [{"subitem_degreename": "Doctor of Philosophy"}]}, "item_10006_description_7": {"attribute_name": "Abstract", "attribute_value_mlt": [{"subitem_description": "A wide range of dynamical phenomena in nature are self-similar. This remarkable property entails that scaled versions of a phenomenon conform onto themselves. It not only affords simplified mathematical analysis but also reveals the physical underpinnings of the phenomenon. In fluid flows, a textbook example of such phenomena is the boundary-layer flow over a rigid boundary---the Blasius boundary layer flow. In this thesis, we experimentally and theoretically study self-similarity in boundary-layer flow over a dynamic boundary, wherein the flow and the boundary are dynamically coupled. Our experimental setup is a soap-film channel, which is essentially a soapy waterfall---a planar film of soap-water solution falling under gravity. This setup has long been used to study quasi-two-dimensional flows in a laboratory setting. Unlike previous experiments, however, where the focus is on the flow in the film, we train attention on what surrounds the film: air. The falling film drags the surrounding air, inducing flow in a thin layer of air adjacent to the film. This flowing air, in turn, resists the motion of the falling film; thus, the film-air interface is a dynamic boundary. We measure the velocity profile of the airflow in the boundary-layer of this interface using super-resolution Particle Image Velocimetry. (To our knowledge, these are the first experiments to measure airflow induced by a soap film.) The downstream evolution of the air velocity profile manifests self-similarity, which we analyze using the framework of boundary-layer theory. Surprisingly, we find that the conditions of self-similarity of the airflow also shed light on the downstream evolution of the film. Beyond air-film interaction, our findings may bear on a broader class of flows over dynamic boundaries, e.g. ocean-air interaction.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10006_dissertation_number_12": {"attribute_name": "Degree Referral Number", "attribute_value_mlt": [{"subitem_dissertationnumber": "甲第119号"}]}, "item_10006_identifier_registration": {"attribute_name": "ID登録", "attribute_value_mlt": [{"subitem_identifier_reg_text": "10.15102/1394.00002652", "subitem_identifier_reg_type": "JaLC"}]}, "item_10006_rights_13": {"attribute_name": "Copyright Information", "attribute_value_mlt": [{"subitem_rights": "© 2023 The Author."}]}, "item_10006_text_24": {"attribute_name": "Exam Date", "attribute_value_mlt": [{"subitem_text_value": "2023-02-21"}]}, "item_10006_version_type_18": {"attribute_name": "Version Format", "attribute_value_mlt": [{"subitem_version_resource": "http://purl.org/coar/version/c_970fb48d4fbd8a85", "subitem_version_type": "VoR"}]}, "item_access_right": {"attribute_name": "アクセス権", "attribute_value_mlt": [{"subitem_access_right": "open access", "subitem_access_right_uri": "http://purl.org/coar/access_right/c_abf2"}]}, "item_files": {"attribute_name": "ファイル情報", "attribute_type": "file", "attribute_value_mlt": [{"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2023-05-17"}], "displaytype": "detail", "download_preview_message": "", "file_order": 0, "filename": "HattoriYunaExamAbstract.pdf", "filesize": [{"value": "49.1 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 49100.0, "url": {"label": "HattoriYunaExamAbstract", "objectType": "abstract", "url": "https://oist.repo.nii.ac.jp/record/2931/files/HattoriYunaExamAbstract.pdf"}, "version_id": "c58eb930-a7ae-4118-bef8-354f83bfb78a"}, {"accessrole": "open_access", "date": [{"dateType": "Available", "dateValue": "2025-04-03"}], "displaytype": "detail", "download_preview_message": "", "file_order": 1, "filename": "HattoriYuna_Abstract_of_Thesis_during_the_embargo_period.pdf", "filesize": [{"value": "407.0 kB"}], "format": "application/pdf", "future_date_message": "", "is_thumbnail": false, "licensetype": "license_note", "mimetype": "application/pdf", "size": 407000.0, "url": {"label": "HattoriYuna_Abstract_of_Thesis_during_the_embargo_period", "objectType": "summary", "url": "https://oist.repo.nii.ac.jp/record/2931/files/HattoriYuna_Abstract_of_Thesis_during_the_embargo_period.pdf"}, "version_id": "b0709576-bfb3-49c5-ac2f-6f12d7efb8a9"}, {"accessrole": "open_date", "date": [{"dateType": "Available", "dateValue": "2025-04-03"}], "download_preview_message": "Download / Preview is available from 2025/4/2.", "file_order": 2, "filename": "HattoriYunaFullText.pdf", "filesize": [{"value": "30.4 MB"}], "format": "application/pdf", "future_date_message": "Download is available from 2025/4/2.", "is_thumbnail": false, "mimetype": "application/pdf", "size": 30400000.0, "url": {"objectType": "fulltext", "url": "https://oist.repo.nii.ac.jp/record/2931/files/HattoriYunaFullText.pdf"}, "version_id": "8261fe3f-fec8-4dd6-9fc5-1ff3d252163e"}]}, "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": "doctoral thesis", "resourceuri": "http://purl.org/coar/resource_type/c_db06"}]}, "item_title": "力学的境界条件下における境界層での自己相似性:垂直石鹸膜に引き起こされる空気の流れ", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "力学的境界条件下における境界層での自己相似性:垂直石鹸膜に引き起こされる空気の流れ", "subitem_title_language": "ja"}, {"subitem_title": "Self-similarity in a Boundary-layer Flow over a Dynamic Boundary: Flow of Air Induced by a Falling Soap Film", "subitem_title_language": "en"}]}, "item_type_id": "10006", "owner": "22", "path": ["241"], "permalink_uri": "https://doi.org/10.15102/1394.00002652", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-05-17"}, "publish_date": "2023-05-17", "publish_status": "0", "recid": "2931", "relation": {}, "relation_version_is_last": true, "title": ["力学的境界条件下における境界層での自己相似性:垂直石鹸膜に引き起こされる空気の流れ"], "weko_shared_id": -1}
力学的境界条件下における境界層での自己相似性:垂直石鹸膜に引き起こされる空気の流れ
https://doi.org/10.15102/1394.00002652
https://doi.org/10.15102/1394.000026520c8117ab-b618-42b8-809b-46be205ab1bd
名前 / ファイル | ライセンス | アクション |
---|---|---|
HattoriYunaExamAbstract (49.1 kB)
|
|
|
HattoriYuna_Abstract_of_Thesis_during_the_embargo_period (407.0 kB)
Restricted Access
|
|
|
HattoriYunaFullText.pdf (30.4 MB)
Download is available from 2025/4/2.
|
|
Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
---|---|---|---|---|---|---|---|---|
公開日 | 2023-05-17 | |||||||
タイトル | ||||||||
言語 | ja | |||||||
タイトル | 力学的境界条件下における境界層での自己相似性:垂直石鹸膜に引き起こされる空気の流れ | |||||||
タイトル | ||||||||
言語 | en | |||||||
タイトル | Self-similarity in a Boundary-layer Flow over a Dynamic Boundary: Flow of Air Induced by a Falling Soap Film | |||||||
言語 | ||||||||
言語 | eng | |||||||
資源タイプ | ||||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||
資源タイプ | doctoral thesis | |||||||
ID登録 | ||||||||
ID登録 | 10.15102/1394.00002652 | |||||||
ID登録タイプ | JaLC | |||||||
アクセス権 | ||||||||
アクセス権 | open access | |||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||
著者 |
服部 優菜
× 服部 優菜
|
|||||||
著者 (英) |
Yuna, Hattori
× Yuna, Hattori
|
|||||||
抄録 | ||||||||
内容記述タイプ | Other | |||||||
内容記述 | A wide range of dynamical phenomena in nature are self-similar. This remarkable property entails that scaled versions of a phenomenon conform onto themselves. It not only affords simplified mathematical analysis but also reveals the physical underpinnings of the phenomenon. In fluid flows, a textbook example of such phenomena is the boundary-layer flow over a rigid boundary---the Blasius boundary layer flow. In this thesis, we experimentally and theoretically study self-similarity in boundary-layer flow over a dynamic boundary, wherein the flow and the boundary are dynamically coupled. Our experimental setup is a soap-film channel, which is essentially a soapy waterfall---a planar film of soap-water solution falling under gravity. This setup has long been used to study quasi-two-dimensional flows in a laboratory setting. Unlike previous experiments, however, where the focus is on the flow in the film, we train attention on what surrounds the film: air. The falling film drags the surrounding air, inducing flow in a thin layer of air adjacent to the film. This flowing air, in turn, resists the motion of the falling film; thus, the film-air interface is a dynamic boundary. We measure the velocity profile of the airflow in the boundary-layer of this interface using super-resolution Particle Image Velocimetry. (To our knowledge, these are the first experiments to measure airflow induced by a soap film.) The downstream evolution of the air velocity profile manifests self-similarity, which we analyze using the framework of boundary-layer theory. Surprisingly, we find that the conditions of self-similarity of the airflow also shed light on the downstream evolution of the film. Beyond air-film interaction, our findings may bear on a broader class of flows over dynamic boundaries, e.g. ocean-air interaction. | |||||||
言語 | en | |||||||
口頭試問日 | ||||||||
2023-02-21 | ||||||||
学位授与年月日 | ||||||||
学位授与年月日 | 2023-03-31 | |||||||
学位名 | ||||||||
学位名 | Doctor of Philosophy | |||||||
学位授与番号 | ||||||||
学位授与番号 | 甲第119号 | |||||||
学位授与機関 | ||||||||
学位授与機関識別子Scheme | kakenhi | |||||||
学位授与機関識別子 | 38005 | |||||||
学位授与機関名 | Okinawa Institute of Science and Technology Graduate University | |||||||
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 | |||||||
権利 | ||||||||
権利情報 | © 2023 The Author. |