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羽根なしディフューザ壁面の部分的粗面化による旋回失速の抑制
http://hdl.handle.net/10069/6754
http://hdl.handle.net/10069/6754368c1534-d895-421f-87ec-ea92be8a61cf
名前 / ファイル | ライセンス | アクション |
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kikaiB66_2101.pdf (598.1 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-02-22 | |||||
タイトル | ||||||
タイトル | 羽根なしディフューザ壁面の部分的粗面化による旋回失速の抑制 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Centrifugal Blower | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Rotating Stall | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Vaneless Diffuser | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | 3-D Boundary Layer | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Separation Control | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Rough Wall | |||||
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 | journal article | |||||
著者 |
坂口, 大作
× 坂口, 大作× 石田, 正弘× 植木, 弘信× 孫, 自祥 |
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著者別名 | ||||||
姓名 | Sakaguchi, Daisaku | |||||
著者別名 | ||||||
姓名 | Ishida, Masahiro | |||||
著者別名 | ||||||
姓名 | Ueki, Hironobu | |||||
著者別名 | ||||||
姓名 | Sun, Zixiang | |||||
その他のタイトル | ||||||
その他のタイトル | Suppression of Rotating Stall in Vaneless Diffuser by Wall Roughness Control | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The authors have proposed a new technique to suppress successfully the rotating stall in the vaneless diffuser. By positioning the completely rough wall between R=1.2 and 1.6 on the hub side diffuser wall alone, the flow rate of rotating stall inception was decreased by 42% at a small pressure drop less than 1% of the blower pressure rise. This is based on that the local reverse flow occurs firstly at the hub side in most centrifugal blowers with backswept blade impeller mainly depending on the distortion of tangential component of inlet main-flow velocity. The 3-D boundary layer calculation shows that the local reverse flow is decreased remarkably by an increase in wall friction, and it disappears if the friction coefficient is 0.01 about twice of the smooth wall. By analyzing the effect of wall friction and turbulence induced by the rough wall, it is clearly shown that the rough wall positioned in the limited region, where the wall-limiting streamline flow angle shows the negative maximum, is quite effective to suppress the rotating stall at a small drop of the diffuser pressure recovery. | |||||
書誌情報 |
日本機械学会論文集. B編 巻 66, 号 648, p. 2101-2108, 発行日 2000-08-25 |
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出版者 | ||||||
出版者 | 日本機械学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03875016 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00187441 | |||||
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 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 日本機械学會論文集. B編 66(648) p.2101-2108, 2000 |