{"created":"2024-03-01T07:23:22.373354+00:00","id":2000059,"links":{},"metadata":{"_buckets":{"deposit":"f92f67c9-dc8b-4966-b778-3e327f13282e"},"_deposit":{"created_by":12,"id":"2000059","owner":"12","owners":[12],"pid":{"revision_id":0,"type":"depid","value":"2000059"},"status":"published"},"_oai":{"id":"oai:repository.naro.go.jp:02000059","sets":["1706970004180:1","87:661:1727312983899:663:1707895637859"]},"author_link":["2303","1437","2005"],"control_number":"2000059","item_12_biblio_info_7":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2004-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"111","bibliographicPageStart":"101","bibliographicVolumeNumber":"202","bibliographic_titles":[{"bibliographic_title":"農業工学研究所技報","bibliographic_titleLang":"ja"},{"bibliographic_title":"Technical report of the National Research Institute of Agricultural Engineering","bibliographic_titleLang":"en"}]}]},"item_12_description_5":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"The water surface in perpendicularly made pipe became higher than water surface of the tank. The MPS method is one of the particle method. The numerical analysis by particle method was carried out in respect of that phenomenon. The MPS method was used in order to analyze the incompressible fluid. In the MPS method, the improvement was carried out in judging method of free water surface and particle layout of the initial condition in order to suppress the pressure vibration, because the calculation result of the pressure vibrates has been known in MPS method. In addition, the model affected surface tension in the free water surface was introduced, because the surface tension excels at free water surface in the pipe of small-diameter. Next, The flow visualization experiment was carried out with experimental equipment of the same dimension as analysis condition in order to verify the analysis result. As the result, shape of free water surface, flow distribution, and time series change of the length of water column in the pipe in the analysis agreed well with the experimental result. Therefore, the validity of the analysis method was able to be confirmed. It is guessed that the element which causes this flow phenomenon is the water pressure difference of the lower end division of pipe and in the tank from the pressure distribution of analytical result. Also, it is guessed that the energy loss which the escaped fluid from the lower end division of pipe produces large vortex is one of causes which the vibration of water surface of the pipe attenuates when the time passes.","subitem_description_language":"en","subitem_description_type":"Abstract"},{"subitem_description":"MPS法（Moving Particle Semi-implicit method）(Koshizuka・Oka, 1996；越塚，1997)は，移動する流体粒子を計算点と見なし，流体の運動方程式を流体粒子間相互作用の式に置き換えて計算するラグランジュ的視点に基づく流体解析手法である。よって，界面の大変形(Koshizukaら，1998)や混層流(後藤ら，2001)など自由水面の存在する流れを容易に解析できる長所が注目されてきた。MPS法のもう一つの長所として，粒子一つ一つを局所平衡状態と見なして，熱力学的な変化を伴う数値流体解析を容易に行うことが考えられる。越塚ら(1998)は，この特徴を利用してMPS法によって相変化を伴う熱流動解析を精度良く行った。\n一方，交付金研究「パイプライン系におけるカルシウムスケール生成予測手法の開発」では，炭酸カルシウムスケールの生成要因に関する実験によって，水面付近の水中の遊離炭酸が大気中へ移動することにより，炭酸カルシウムスケールの生成が促進されることが明らかになった(田中ら，2001）。実験結果から判断すると，農業用パイプラインの形態がクローズドタイプであれば，炭酸カルシウムスケールの管内付着はないと考えられるが，オープンタイプである場合，ファームポンドにおいて１次水槽から２次水槽への越流や２次水槽内での対流によって生成が促進される恐れがある。よって，パイプライン系の炭酸カルシウムスケール生成予測シミュレーションの開発において，管内部よりもファームポンド内部における炭酸カルシウムスケールの生成量の算出が重要であり，越流堰における急変流の水面を検出できることが必要である。\nMPS法は，急激に変化する自由水面を伴う流れや化学変化を伴う流れの解析を容易に行うことが期待されると同時に，流れの運動方程式における移流項を粒子間相互作用の式に置き換えて，陽的に計算するため，空間一階微分に起因する数値拡散を回避して，微量な炭酸カルシウムスケールの生成量を算出できることが期待できる(Tanakaら，2003；田中ら，2003a，田中ら，2003b）。\n炭酸カルシウムスケールの生成予測シミュレーションへMPS法を適用するに当たり，計算結果の精度の確認を行うことが必要である。これまで，粒子法による大変形の流れの精度確認は，ダム崩壊流れをベンチマーク試験とし，可視化実験との比較判断によって行われてきた。しかし，粒子法による水槽内の流れの計算では，粒子の初期配置方法によって，圧力や流速の分布が異なることが知られている(田中ら，2003b）。ファームポンド内の流れを計算するためには，水槽内の流れの計算精度を確認することが必要である。\nそこで，本研究では，水槽内に垂直に立てた管内の水が振動するときの流れをMPS法にて数値解析して，流れ可視化実験との比較によって，MPS法の有効性を検討した。","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_12_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.24514/0002000059","subitem_identifier_reg_type":"JaLC"}]},"item_12_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"独立行政法人農業工学研究所","subitem_publisher_language":"ja"},{"subitem_publisher":"NATIONAL INSTITUTE FOR RURAL ENGINEERING INDEPENDENT ADMINISTRATIVE INSTITUTION","subitem_publisher_language":"en"}]},"item_12_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-3314","subitem_source_identifier_type":"PISSN"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"TANAKA, Yoshikazu","creatorNameLang":"en"},{"creatorName":"田中, 良和","creatorNameLang":"ja"},{"creatorName":"タナカ, ヨシカズ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"TANAKA","familyNameLang":"en"},{"familyName":"田中","familyNameLang":"ja"},{"familyName":"タナカ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Yoshikazu","givenNameLang":"en"},{"givenName":"良和","givenNameLang":"ja"},{"givenName":"ヨシカズ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"2303","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"50360384","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=50360384"},{"nameIdentifier":"read0208741","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/read0208741"}]},{"creatorNames":[{"creatorName":"MUKAI, Akie","creatorNameLang":"en"},{"creatorName":"向井, 章恵","creatorNameLang":"ja"},{"creatorName":"ムカイ, アキエ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"MUKAI","familyNameLang":"en"},{"familyName":"向井","familyNameLang":"ja"},{"familyName":"ムカイ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Akie","givenNameLang":"en"},{"givenName":"章恵","givenNameLang":"ja"},{"givenName":"アキエ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"1437","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"90414458","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=90414458"},{"nameIdentifier":"mukaia","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/mukaia"}]},{"creatorNames":[{"creatorName":"TARUYA, Hiroyuki","creatorNameLang":"en"},{"creatorName":"樽屋, 啓之","creatorNameLang":"ja"},{"creatorName":"タルヤ, ヒロユキ","creatorNameLang":"ja-Kana"}],"familyNames":[{"familyName":"TARUYA","familyNameLang":"en"},{"familyName":"樽屋","familyNameLang":"ja"},{"familyName":"タルヤ","familyNameLang":"ja-Kana"}],"givenNames":[{"givenName":"Hiroyuki","givenNameLang":"en"},{"givenName":"啓之","givenNameLang":"ja"},{"givenName":"ヒロユキ","givenNameLang":"ja-Kana"}],"nameIdentifiers":[{"nameIdentifier":"2005","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"00355653","nameIdentifierScheme":"e-Rad","nameIdentifierURI":"https://kaken.nii.ac.jp/ja/search/?qm=00355653"},{"nameIdentifier":"read0208737","nameIdentifierScheme":"researchmap","nameIdentifierURI":"http://researchmap.jp/read0208737"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-03-01"}],"displaytype":"detail","filename":"TRNIREJ202_101-111.pdf","filesize":[{"value":"469 KB"}],"format":"application/pdf","license_note":"©　 国立研究開発法人 農業・食品産業技術総合研究機構\nNational Agriculture and Food Research Organization, Japan","licensetype":"license_note","mimetype":"application/pdf","url":{"url":"https://repository.naro.go.jp/record/2000059/files/TRNIREJ202_101-111.pdf"},"version_id":"acfe2f4d-5e04-40d8-b82e-ff95499004ed"}]},"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":"垂直に立てた管水路内の流れ解析","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"垂直に立てた管水路内の流れ解析","subitem_title_language":"ja"},{"subitem_title":"The flow analysis in perpendicularly made pipe","subitem_title_language":"en"}]},"item_type_id":"12","owner":"12","path":["1707895637859","1"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-03-01"},"publish_date":"2024-03-01","publish_status":"0","recid":"2000059","relation_version_is_last":true,"title":["垂直に立てた管水路内の流れ解析"],"weko_creator_id":"12","weko_shared_id":-1},"updated":"2024-08-08T01:15:12.779762+00:00"}