Cavitation in Pump Inducer with Axi-Asymmetrical Inlet Plate Observed by Multi-Cameras
-
- ATONO Takashi
- 九州能力開発大学校
-
- KIM Jun-Ho
- 九州大学 大学院 工学府
-
- ISHIZAKA Koichi
- 九州大学 大学院 工学研究院
-
- WATANABE Satoshi
- 九州大学 大学院 工学研究院機械科学部門
-
- FURUKAWA Akinori
- 九州大学 大学院 工学研究院機械科学部門
Bibliographic Information
- Other Title
-
- マルチカメラによる非軸対称入口障害板付きポンプインデューサのキャビテーション観察
- マルチカメラ ニ ヨル ヒ ジク タイショウ イリグチ ショウガイバン ツキ ポンプ インデューサ ノ キャビテーション カンサツ
Search this article
Abstract
The attachment of inducer in front of main impeller is a powerful method to improve cavitation performance. In operating condition at partial flow rate and extremely low suction pressure, however cavitation surge oscillation occurs. As the cavitation surge oscillation with low frequency occurs in a close relation between the inlet back-flow cavitation and the growth of blade cavity to the throat section of blade passage, one method of installing an axi-asymmetrical plate upstream of inducer is proposed to suppress the oscillation. It is considered as the suppression mechanism of oscillation conceptually to avoid making flow at all throat sections unstable simultaneously due to inlet flow distortion by suction axi-asymmetrical plate. In the present study, cavitation behaviors in the inducer is observed with distributing multi-cameras circumferentially, recording simultaneously and reconstructing multi-photos on one plane field as moving a linear cascade. Observed results are utilized for discussion with other measuring results as casing wall pressure distribution. Then the suppression mechanism of oscillation by installing axi-asymmetrical inlet plate will be clarified in more details.
Journal
-
- Turbomachinery
-
Turbomachinery 36 (8), 477-482, 2008
Turbomachinery Society of Japan
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390001204545888384
-
- NII Article ID
- 10021103918
-
- NII Book ID
- AN00004836
-
- ISSN
- 18802338
- 03858839
-
- NDL BIB ID
- 9592549
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL
- CiNii Articles
-
- Abstract License Flag
- Disallowed