ターボ機械

Technical Papers

インデューサの逆流返し付きケーシングによるキャビテーションサージ抑制

中野政隆, 川崎聡, 都丸裕司

2006 年 34 巻 1 号 p. 35-40
発行日: 2006年
公開日: 2007/05/16

DOIhttps://doi.org/10.11458/tsj.34.35

ジャーナルフリー

抄録を表示する抄録を非表示にする

The effects of the inlet casing with a backflow restriction device (BRD) on cavitation surge were examined. It was found that backflow cavitation volume fluctuation would be restrained by BRD, so that cavitation surge would be suppressed. The effects of a BRD configuration on cavitation surge were also examined.

抄録全体を表示

PDF形式でダウンロード (399K)
小型軸流ファンの翼先端漏れ渦を含む流れ場

塩見憲正, 金子賢二, 下薗和幸, 瀬戸口俊明

2006 年 34 巻 1 号 p. 41-47
発行日: 2006年
公開日: 2007/05/16

DOIhttps://doi.org/10.11458/tsj.34.41

ジャーナルフリー

抄録を表示する抄録を非表示にする

In order to clarify the unsteady flow field with tip leakage vortex in a small axial fan, the experimental investigation was carried out. The small fan tested in this study is mainly used to cool the electronic parts. Therefore, it is required that its fan has high cooling capacity, i.e. high efficiency, and low noise level. In the present study, the velocity field measurements at rotor inlet and outlet using a single slant hot-wire probe and pressure field measurements on the casing wall using high response pressure transducers were performed. From these results, the tip leakage vortex features occurring in this fan was discussed.

抄録全体を表示

PDF形式でダウンロード (559K)
斜流送風機の内部流れに関する研究

(翼負荷が旋回失速流れに及ぼす影響)

塩見憲正, 金子賢二, 木上洋一, 瀬戸口俊明

2006 年 34 巻 1 号 p. 48-56
発行日: 2006年
公開日: 2007/05/16

DOIhttps://doi.org/10.11458/tsj.34.48

ジャーナルフリー

抄録を表示する抄録を非表示にする

In order to clarify the effect of blade loading on the flow fields including a rotating stall cell, the structure and behavior of a rotating stall cell were experimentally investigated in the diagonal flow fans with different blade loading. The total pressure-rise coefficient at design flow-rate for each fan is 0.250 and 0.345. The static pressure on outer casing and the total pressure at rotor inlet were measured using a high responded pressure transducer.The measured data were processed by the use of DPLA technique, and the structure and behavior of a rotating stall cell were obtained for each fan. As a result, the size of stall cell becomes large for circumferential and radial direction and the propagating speed of stall cell becomes slow, as the blade loading increases. However, when the blade loading increase, large diffences are not seen for the basic structure, propagating form and the features of the flow fields with a rotating stall cell.

抄録全体を表示

PDF形式でダウンロード (815K)

J-STAGEへの登録はこちら（無料）