{"created":"2023-07-27T06:44:33.468217+00:00","id":34824,"links":{},"metadata":{"_buckets":{"deposit":"8478e54e-2e14-4c02-af98-8198f8432b28"},"_deposit":{"created_by":3,"id":"34824","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"34824"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00034824","sets":["2812:2813:2832"]},"author_link":["10640"],"item_9_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2002-03-01","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"2p.","bibliographicVolumeNumber":"1999-2001","bibliographic_titles":[{"bibliographic_title":"平成13(2001)年度 科学研究費補助金 基盤研究(C) 研究成果報告書"},{"bibliographic_title":"2001 Fiscal Year Final Research Report","bibliographic_titleLang":"en"}]}]},"item_9_creator_33":{"attribute_name":"著者別表示","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{}],"nameIdentifiers":[{},{},{}]}]},"item_9_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Solidification processes can be observed in a variety of fields of fields of engineering and geophysical phenomena. In metallurgy, for instance, the solidifying conditions of the melt determine the mechanical propertiesof the solid products. In semiconductor industry, integrated circuit devices require the large single crystals by high perfection, containing a uniformly distributed dopant. Geophysical problems also involve solidification processes, such as freezing sea water in arctic region, lake freezing and formation of igneous intrusives. In the present research we particularly concern with a possible way to control the location of solid liquid interface and the speed of advancing solid front. In order to achieve this goal it is needed to adjust the cooling temperature with time. From a point of view of fluid mechanics and heat transfer, a liquid to solid phase change involves a coupling of heat conduction in the solid layer as well as convecting process in the liquid layer. In cha pters 1 and 2, we develop both one-dimensional and two-dimensional models for a solidifying problem when a liquid body is cooled from the top boundary. The cooling temperature is varied periodically with time, and the bottom temperature is kept constant. The one-dimensional and two-dimensional models are formulated and solved numerically in general. But, it is also shown that an analytical solution is possible for a special case, where the Stefan number is small and the solid-liquid boundary movement is slow enough in comparison with the thermal diffusion in the solid layer. In chapter 3 we carry out a corresponding experiment with an insulated box containing distilled water. Both analytical and numerical predictions agree well with the experimental results regarding the solidifying front movement. In chapter 4 the study has been extended to solidification in a liquid-saturated porous medium. In chapters 5 and 6 we conduct a fundamental study on porous media convection and mixed convection in a vertical channel. Both analyzes serve in order to under stand transport process in a mashy zone, and to control convective heat transfer at the solid front. ","subitem_description_type":"Abstract"},{"subitem_description":"本研究の目的は、凝固過程の動的挙動に注目し、そのプロセス(特に固相領域の厚さ)を冷却面温度を非定常的に制御することにより達成しようとすものである。固相厚さや固相成長速度を制御するために必要な冷却面温度の非定常な設定値を、簡便で実用上十分な精度を有する方法で計算し、予測する可能性について検討した。このため、まず最初に非定常一次元の凝固解析モデルを提案し、当該モデルによる冷却面の温度変動に対する固相厚さの応答について解析した。さらに、この簡便な解析モデルの妥当性を検証する目的で、二次元数値モデルを開発した。また、矩形空間を満たした蒸留水を上方から冷却し、氷層を形成する実験を行った。その結果、提案した一次元、二次元モデルによる予測値が実験結果と良い一致を示すことがわかり、当該解析モデルの妥当性が証明された。解析と実験の比較は、主に冷却面温度を周期的に変動させて行われた。この時の固相厚さ変動の振幅と冷却面温度変動に対する位相遅れの二点について、理論予測値と実験値の比較を行っている。本研究における理論解析の特徴は液相領域での自然対流の存在を考慮している点である。特に水は4℃で密度が最大となるため、複雑な自然対流が発生し、固液界面での対流熱伝達も一般的には複雑な様相を呈する。しかしながら、これまでの研究によると、空間的に平均化された固相厚さの時間変動は、一次元解析モデルにより実用上十分な精度で近似することが出来ることが証明された。これにより、対流の直接計算が不可能な高Ra数領域での乱流熱伝達が存在する場合でも、凝固プロセスを非定常的に制御するための冷却面温度を理論的に予測できることを示した。","subitem_description_type":"Abstract"}]},"item_9_description_22":{"attribute_name":"内容記述","attribute_value_mlt":[{"subitem_description":"研究課題/領域番号:11650214, 研究期間(年度):1999-2001, 平成13(2001)年度 科学研究費補助金 基盤研究(C) 研究成果報告書の一部(概要)を掲載","subitem_description_type":"Other"},{"subitem_description":"出典：「凝固過程の動的挙動とその制御に関する研究」研究成果報告書　課題番号11650214\n  (KAKEN：科学研究費助成事業データベース（国立情報学研究所）)\n　　　本文データは著者版報告書より作成","subitem_description_type":"Other"}]},"item_9_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24517/00034811","subitem_identifier_reg_type":"JaLC"}]},"item_9_publisher_17":{"attribute_name":"公開者","attribute_value_mlt":[{"subitem_publisher":"金沢大学工学部"}]},"item_9_relation_28":{"attribute_name":"関連URI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/search/?qm=70272953","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650214/","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-11650214/116502142001kenkyu_seika_hokoku_gaiyo/","subitem_relation_type_select":"URI"}}]},"item_9_version_type_25":{"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_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-10-05"}],"displaytype":"detail","filename":"TE-PR-KIMURA-S-kaken 2002-2p.pdf","filesize":[{"value":"147.2 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"TE-PR-KIMURA-S-kaken 2002-2p.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/34824/files/TE-PR-KIMURA-S-kaken 2002-2p.pdf"},"version_id":"97160aae-f7de-4a9e-b4b6-3ef9a0ac6613"}]},"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":"research report","resourceuri":"http://purl.org/coar/resource_type/c_18ws"}]},"item_title":"凝固過程の動的挙動とその制御に関する研究","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"凝固過程の動的挙動とその制御に関する研究"},{"subitem_title":"Dynamic response of solididification process to time-varying cooling temperature","subitem_title_language":"en"}]},"item_type_id":"9","owner":"3","path":["2832"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-10-05"},"publish_date":"2017-10-05","publish_status":"0","recid":"34824","relation_version_is_last":true,"title":["凝固過程の動的挙動とその制御に関する研究"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-27T14:44:34.724860+00:00"}