Experimental Investigation of the Effect of Radial Gap and Impeller Blade Exit on Flow-Induced Vibration at the Blade-Passing Frequency in a Centrifugal Pump
Joint Authors
al-Qutub, A.
Khalifa, A.
Khulief, Y. A.
Source
International Journal of Rotating Machinery
Issue
Vol. 2009, Issue 2009 (31 Dec. 2009), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-02-21
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
It has been recognized that the pressure pulsation excited by rotor-stator interaction in large pumps is strongly influenced by the radial gap between impeller and volute diffusers/tongues and the geometry of impeller blade at exit.
This fluid-structure interaction phenomenon, as manifested by the pressure pulsation, is the main cause of flow-induced vibrations at the blade-passing frequency.
In the present investigation, the effects of the radial gap and flow rate on pressure fluctuations, vibration, and pump performance are investigated experimentally for two different impeller designs.
One impeller has a V-shaped cut at the blade's exit, while the second has a straight exit (without the V-cut).
The experimental findings showed that the high vibrations at the blade-passing frequency are primarily raised by high pressure pulsation due to improper gap design.
The existence of V-cut at blades exit produces lower pressure fluctuations inside the pump while maintaining nearly the same performance.
The selection of proper radial gap for a given impeller-volute combination results in an appreciable reduction in vibration levels.
American Psychological Association (APA)
al-Qutub, A.& Khalifa, A.& Khulief, Y. A.. 2010. Experimental Investigation of the Effect of Radial Gap and Impeller Blade Exit on Flow-Induced Vibration at the Blade-Passing Frequency in a Centrifugal Pump. International Journal of Rotating Machinery،Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-491950
Modern Language Association (MLA)
al-Qutub, A.…[et al.]. Experimental Investigation of the Effect of Radial Gap and Impeller Blade Exit on Flow-Induced Vibration at the Blade-Passing Frequency in a Centrifugal Pump. International Journal of Rotating Machinery No. 2009 (2009), pp.1-9.
https://search.emarefa.net/detail/BIM-491950
American Medical Association (AMA)
al-Qutub, A.& Khalifa, A.& Khulief, Y. A.. Experimental Investigation of the Effect of Radial Gap and Impeller Blade Exit on Flow-Induced Vibration at the Blade-Passing Frequency in a Centrifugal Pump. International Journal of Rotating Machinery. 2010. Vol. 2009, no. 2009, pp.1-9.
https://search.emarefa.net/detail/BIM-491950
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-491950