書誌事項
- タイトル別名
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- Inlet Flow of Semi-opened Propeller Fan at Low Flow Rate
- 半開放型プロペラファンの低流量域入口流れ(翼先端外側の速度変動場)
- ハンカイホウガタ プロペラファン ノ テイリュウリョウイキ イリグチ ナガレ ヨク センタン ソトガワ ノ ソクド ヘンドウバ
- (Velocity Fluctuations Outside of Blade Tip)
- （翼先端外側の速度変動場）
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抄録
In order to clarify the inlet flow fields of a semi-opened propeller fan with bellmouth at low flow-rate region, especially the flow fields outside of blade tip, the experimental investigation was carried out using hot-wire anemometer. The axial and tangential velocity component including the radial velocity component were measured using a single I-type hot-wire probe. FFT analysis was done to search the periodical fluctuation with frequency different from the one for rotor rotating. And, the distributions of velocity fluctuations on meridional plane were shown to obtain the flow structure at low flow-rate. As a result, it was confirmed that two types of periodical fluctuations without rotor rotating frequency, which are similar to rotating stall, occur. One has a frequency of approximately 7 Hz at φ=0.210 near rear portion of open area, and the other has as frequency of 10 Hz at φ=0.180 near front portion of open area. It is also found that the flow condition largely changes near these flow-rates.
収録刊行物
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- ターボ機械
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ターボ機械 39 (4), 238-248, 2011
一般社団法人 ターボ機械協会
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詳細情報 詳細情報について
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- CRID
- 1390001204545722752
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- NII論文ID
- 10027966389
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- NII書誌ID
- AN00004836
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- ISSN
- 18802338
- 03858839
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- NDL書誌ID
- 11053076
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可