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Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle
Joint Authors
Pérez Flores, P.
Kosyna, G.
Wulff, Detlev
Source
International Journal of Rotating Machinery
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-09-02
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
It has been shown that the sudden decrease of pump head in an axial flow pump caused by stall can be overcome by means of casing treatment.
Flat axial grooves in front of the impeller break the swirl of the near-casing backflow.
The disadvantage of this method is strong cavitation at the inlet of the grooves for flow rates below the stall point.
In this paper another improved method to stabilize the performance curve will be presented, using a double-inlet-nozzle.
At the onset of stall the initial near-casing backflow with its high swirl is lead off into the gap between both nozzles.
At design conditions this double-inlet-nozzle is working as an injector, supporting the near-casing-inflow.
The function of the double-inlet-nozzle is demonstrated by PIV-measurements.
American Psychological Association (APA)
Pérez Flores, P.& Kosyna, G.& Wulff, Detlev. 2008. Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle. International Journal of Rotating Machinery،Vol. 2008, no. 2008, pp.1-7.
https://search.emarefa.net/detail/BIM-479563
Modern Language Association (MLA)
Pérez Flores, P.…[et al.]. Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle. International Journal of Rotating Machinery No. 2008 (2008), pp.1-7.
https://search.emarefa.net/detail/BIM-479563
American Medical Association (AMA)
Pérez Flores, P.& Kosyna, G.& Wulff, Detlev. Suppression of Performance Curve Instability of an Axial-Flow Pump by Using a Double-Inlet-Nozzle. International Journal of Rotating Machinery. 2008. Vol. 2008, no. 2008, pp.1-7.
https://search.emarefa.net/detail/BIM-479563
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479563