Experimental Investigation on Cavitating Flow Induced Vibration Characteristics of a Low Specific Speed Centrifugal Pump
Joint Authors
Yang, Minguan
Gao, Bo
Li, Zhong
Guo, Pengming
Zhang, Ning
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-07-31
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Cavitating flow developing in the blade channels is detrimental to the stable operation of centrifugal pumps, so it is essential to detect cavitation and avoid the unexpected results.
The present paper concentrates on cavitation induced vibration characteristics, and special attention is laid on vibration energy in low frequency band, 10–500 Hz.
The correlation between cavitating evolution and the corresponding vibration energy in 10–500 Hz frequency band is discussed through visualization analysis.
Results show that the varying trend of vibration energy in low frequency band is unique compared with the high frequency band.
With cavitation number decreasing, vibration energy reaches a local maximum at a cavitation number much larger than the 3% head drop point; after that it decreases.
The varying trend is closely associated with the corresponding cavitation status.
With cavitation number decreasing, cavitation could be divided into four stages.
The decreasing of vibration energy, in particular cavitation number range, is caused by the partial compressible cavitation structure.
From cavitation induced vibration characteristics, vibration energy rises much earlier than the usual 3% head drop criterion, and it indicates that cavitation could be detected in advance and effectively by means of cavitation induced vibration characteristics.
American Psychological Association (APA)
Gao, Bo& Guo, Pengming& Zhang, Ning& Li, Zhong& Yang, Minguan. 2017. Experimental Investigation on Cavitating Flow Induced Vibration Characteristics of a Low Specific Speed Centrifugal Pump. Shock and Vibration،Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1204818
Modern Language Association (MLA)
Gao, Bo…[et al.]. Experimental Investigation on Cavitating Flow Induced Vibration Characteristics of a Low Specific Speed Centrifugal Pump. Shock and Vibration No. 2017 (2017), pp.1-12.
https://search.emarefa.net/detail/BIM-1204818
American Medical Association (AMA)
Gao, Bo& Guo, Pengming& Zhang, Ning& Li, Zhong& Yang, Minguan. Experimental Investigation on Cavitating Flow Induced Vibration Characteristics of a Low Specific Speed Centrifugal Pump. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-12.
https://search.emarefa.net/detail/BIM-1204818
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204818