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asymmetrical two-dimensional nozzle", "subitem_title_language": "en"}]}, "item_type_id": "1", "owner": "20", "path": ["3818", "8401"], "permalink_uri": "https://doi.org/10.14988/pa.2017.0000013325", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2013-11-26"}, "publish_date": "2013-11-26", "publish_status": "0", "recid": "22456", "relation": {}, "relation_version_is_last": true, "title": ["非対称二次元ノズルから放出された強制脈動噴流"], "weko_shared_id": -1}
非対称二次元ノズルから放出された強制脈動噴流
https://doi.org/10.14988/pa.2017.0000013325
https://doi.org/10.14988/pa.2017.000001332538bfdae0-26d2-498d-ab7d-3edf7a9f31cf
名前 / ファイル | ライセンス | アクション |
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023054030007.pdf (1.5 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2013-11-26 | |||||
タイトル | ||||||
言語 | ja | |||||
タイトル | 非対称二次元ノズルから放出された強制脈動噴流 | |||||
タイトル | ||||||
言語 | ja-Kana | |||||
タイトル | ヒタイショウ ニジゲン ノズル カラ ホウシュツ サレタ キョウセイ ミャクドウ フンリュウ | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Forcedly-pulsating jet emitted from an asymmetrical two-dimensional nozzle | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題 | 噴流, 乱流混合, 二次元流れ, 空調, 脈動流 jet, turbulent mixing, two-dimensional flow, air conditioning, pulsating flow |
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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 | |||||
ID登録 | ||||||
ID登録 | 10.14988/pa.2017.0000013325 | |||||
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 |
平田, 勝哉
× 平田, 勝哉× 村山, 泰祐× 笑喜, 悠輔× 舟木, 治郎 |
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著者所属 | ||||||
ja | ||||||
平田, 勝哉 / 同志社大学理工学部エネルギー機械工学科教授 | ||||||
著者所属 | ||||||
ja | ||||||
村山, 泰祐 / 同志社大学理工学部エネルギー機械工学科 | ||||||
著者所属 | ||||||
ja | ||||||
笑喜, 悠輔 / 同志社大学理工学部エネルギー機械工学科 | ||||||
著者所属 | ||||||
ja | ||||||
舟木, 治郎 / 同志社大学理工学部エネルギー機械工学科 | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | 混合/拡散の促進は,産業分野の様々な局面でも鍵となる技術の一つであり,化学反応炉や熱交換器,燃焼器,空調機器などに重要である.噴流の利用は,混合/拡散の促進に有用であることが知られている.本研究では,ノズル出口に片側のみにリップを持つ非対称二次元ノズルからの噴流について調べる.特に,強制脈動の影響について着目する.実験はレイノルズ数6000で行う.ノズル出口のアスペクト比は300に固定し,ノズルの非対称性はリップ長さlで表し,l = 0,3.3h,5.0hである.ここに,hはノズル出口の高さである.熱線流速計を使用して平均速度分布を,下流の数個所の断面で求め,非脈動流との比較に基づき,噴流の基本特性を明らかにする.その結果,強制脈動時においてさえ,l/h = 0-5.0の範囲で,非脈動時と同様,準平面噴流とみなし得る様な充分な二次元噴流の実現に成功している.エントレイメント流量の増加の様な非対称効果が,強制脈動により明瞭に高められる.すなわち,すべてのl/hにおいて,脈動流の時間平均局所流量は,どの下流地点においても,非脈動流に比べて大きい.特にl/h = 5.0において,非脈動時も噴流は,(1)リップ側への偏向と,(2)噴流軸の空間的うねりといった特徴を示すが,強制脈動は,これら二つの特徴を更に高める. | |||||
言語 | ja | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Mixing/diffusion enhancement is one of key technologies in various industrial aspects, and is needed in chemical reactors, heat exchangers, burners/combustors, low-noise jet engines, air conditioners and so on. Jets are known to be useful for such mixing/diffusion enhancement. In the present study, the authors research the jet from an asymmetrical two-dimensional nozzle, of which the asymmetry is introduced by a lip attached to only one side of the nozzle exit. Especially, the authors focus on the influence of forced jet's pulsation. Experiments are conducted at a Reynolds number of 6,000. The aspect ratio of a nozzle exit is fixed to 300, and a nozzle-lip length l which represents the geometrical asymmetry of the nozzle is equal to 0, 3.3h or 5.0h, where h denotes the height of the nozzle exit. Using a hot-wire anemometer, the authors show mean-velocity profiles, comparing the pulsating flow with the non-pulsating flow. As a result, the authors have successfully attained such a sufficiently-two-dimensional jet as the quasi-plain jet without the forced pulsation, at the reduced lip length l/h = 0 – 5.0 even for the pulsating flow. Then, the authors have clearly observed a jet-pulsation influence to enhance such an asymmetrical effect as the increase in entrainment flow rate. That is, the local time-mean flow rates of the pulsating flow is everywhere larger than that of non-pulsating flow for each l/h. Especially for l/h = 5.0, the jet's bias shows such features as (1) a lip-wards deflection and (2) a spacial meander of the jet axis. The forced pulsation also enhances the l/h effects upon these two features. | |||||
言語 | en | |||||
書誌情報 |
ja : 同志社大学理工学研究報告 en : The Science and Engineering Review of Doshisha University 巻 54, 号 3, p. 231-239, 発行日 2013-10-31 |
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出版者 | ||||||
言語 | ja | |||||
出版者 | 同志社大学理工学研究所 | |||||
出版者(英) | ||||||
言語 | en | |||||
出版者 | Science and Engineering Research Institute of Doshisha University | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 00368172 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00165868 | |||||
権利者情報 | ||||||
権利者名 | 同志社大学理工学研究所 | |||||
言語 | ja | |||||
権利者名 | Science and Engineering Research Institute of Doshisha University | |||||
言語 | en | |||||
関連サイト | ||||||
関連タイプ | isFormatOf | |||||
識別子タイプ | URI | |||||
関連識別子 | https://doors.doshisha.ac.jp/opac/opac_link/bibid/SB00960326/?lang=0 | |||||
言語 | ja | |||||
関連名称 | 掲載刊行物所蔵情報へのリンク / Link to Contents | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
日本十進分類法 | ||||||
主題 | 423.84 |