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A Numerical Investigation of Water Level Effect on the Vortex in Intake Sump
http://hdl.handle.net/10458/6406
http://hdl.handle.net/10458/640637699f19-228a-44b3-980c-6fc87750a407
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
本文 (1.3 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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| 公開日 | 2020-06-21 | |||||
| タイトル | ||||||
| タイトル | A Numerical Investigation of Water Level Effect on the Vortex in Intake Sump | |||||
| 言語 | ja | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| キーワード | ||||||
| 言語 | en | |||||
| 主題Scheme | Other | |||||
| 主題 | Numerical analysis, VOF multiphase model, Free surface vortex, Vortex length, Intake sump | |||||
| 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 | |||||
| 著者 |
B, シン
× B, シン |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | The effect of the water level on free surface vortices in intake sump was investigated by numerical approach. A finite volume method with a RANS turbulence model and a VOF multiphase model was applied to solve the sump flow with a single intake channel. Multi-blocked structured grids and the open channel model were used to capture the flow behavior and their mutual interactions between air and water phases with higher accuracy. Air-water interface level, air-entrained vortex length, and air volume fraction contours and iso-surfaces were used to visually identify the location and shape of the free surface as well as surface vortices. By monitoring the vortex length with varying water level, it was found that that lower water levels induced stronger free surface vortices. The behavior of surface vortices and air bubbles caused by breaking off air-entrained vortices was explained well by using the volume rendering method and air volume fraction contours. The predicted velocity distributions at the entrance of bell mouth were in a good agreement with those of experiments. | |||||
| 言語 | en | |||||
| 書誌情報 |
ja : 宮崎大学工学部紀要 en : Memoirs of Faculty of Engineering, University of Miyazaki 巻 47, p. 45-48, 発行日 2018-07 |
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| 出版者 | ||||||
| 出版者 | 宮崎大学工学部 | |||||
| 言語 | ja | |||||
| 出版者 | ||||||
| 出版者 | Faculty of Engineering, University of Miyazaki | |||||
| 言語 | en | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 05404924 | |||||
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| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AA00732558 | |||||
| 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 | |||||
