{"created":"2021-03-01T06:20:30.224440+00:00","id":3852,"links":{},"metadata":{"_buckets":{"deposit":"0989258e-231e-468e-914f-ec4f4b41d175"},"_deposit":{"id":"3852","owners":[],"pid":{"revision_id":0,"type":"depid","value":"3852"},"status":"published"},"_oai":{"id":"oai:repository.dl.itc.u-tokyo.ac.jp:00003852","sets":["110:255:256","9:233:234"]},"item_7_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2010-03-24","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_7_date_granted_25":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2010-03-24"}]},"item_7_degree_name_20":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"修士(環境学)"}]},"item_7_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"In recent years, the power uprate of Boiling Water Reactors have been conducted at several existing power plants as a way to improve plant economy. In one of the power uprated plants (117.8% uprates) in the United States, the steam dryer breakages due to fatigue fracture occurred. It is conceivable that the increased steam flow passing through the branches caused a self-induced vibration with the propagation of sound wave into the steam-dome. The resonance among the structure, flow and the pressure fluctuation resulted in the breakages. To understand the basic mechanism of the resonance, Dynamic Particle Image Velocimetry (PIV) system was applied to investigate acoustic vibration inside the upper plenum. In this study, time-series velocities of the air driven by the acoustic standing wave were obtained in three dimensional space by three high speed cameras. Also, it was succeeded to evaluate the resonance frequency of the upper plenum and three dimensional fluid vibration.","subitem_description_type":"Abstract"}]},"item_7_select_21":{"attribute_name":"学位","attribute_value_mlt":[{"subitem_select_item":"master"}]},"item_7_text_24":{"attribute_name":"研究科・専攻","attribute_value_mlt":[{"subitem_text_value":"新領域創成科学研究科人間環境学専攻"}]},"item_7_text_27":{"attribute_name":"学位記番号","attribute_value_mlt":[{"subitem_text_value":"修創域第3499号"}]},"item_7_text_4":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京大学大学院新領域創成科学研究科環境学研究系人間環境学専攻"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"熊谷, 康介"}],"nameIdentifiers":[{"nameIdentifier":"8986","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":"2017-05-31"}],"displaytype":"detail","filename":"K-02263-a.pdf","filesize":[{"value":"844.6 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"要旨(summary)","url":"https://repository.dl.itc.u-tokyo.ac.jp/record/3852/files/K-02263-a.pdf"},"version_id":"31b676a3-2dc6-4e4d-a196-e7870351e217"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"Boiling Water Reactor","subitem_subject_scheme":"Other"},{"subitem_subject":"Acoustic vibration","subitem_subject_scheme":"Other"},{"subitem_subject":"Dynamic PIV","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":"thesis","resourceuri":"http://purl.org/coar/resource_type/c_46ec"}]},"item_title":"沸騰水型軽水炉上部プレナムにおける音響共鳴現象の可視化（要旨）","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"沸騰水型軽水炉上部プレナムにおける音響共鳴現象の可視化（要旨）"}]},"item_type_id":"7","owner":"1","path":["234","256"],"pubdate":{"attribute_name":"公開日","attribute_value":"2012-10-12"},"publish_date":"2012-10-12","publish_status":"0","recid":"3852","relation_version_is_last":true,"title":["沸騰水型軽水炉上部プレナムにおける音響共鳴現象の可視化（要旨）"],"weko_creator_id":"1","weko_shared_id":null},"updated":"2022-12-19T03:45:32.324012+00:00"}