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Dynamic Characteristics of Rotating Stall in Mixed Flow Pump
Joint Authors
Li, Yi
Liu, Wei
Pan, Zhongyong
Yuan, Shouqi
Li, Xiaojun
Source
Journal of Applied Mathematics
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-10-01
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Rotating stall, a phenomenon that causes flow instabilities and pressure hysteresis by propagating at some fraction of the impeller rotational speed, can occur in centrifugal impellers, mixed impellers, radial diffusers, or axial diffusers.
Despite considerable efforts devoted to the study of rotating stall in pumps, the mechanics of this phenomenon are not sufficiently understood.
The propagation mechanism and onset of rotating stall are not only affected by inlet flow but also by outlet flow as well as the pressure gradient in the flow passage.
As such, the complexity of these concepts is not covered by the classical explanation.
To bridge this research gap, the current study investigated prerotation generated at the upstream of the impeller, leakage flow at the tip clearance between the casing and the impeller, and strong reserve flow at the inlet of the diffuser.
Understanding these areas will clarify the origin of the positive slope of the head-flow performance curve for a mixed flow pump.
Nonuniform pressure distribution and adverse pressure gradient were also introduced to evaluate the onset and development of rotating stall within the diffuser.
American Psychological Association (APA)
Li, Xiaojun& Yuan, Shouqi& Pan, Zhongyong& Li, Yi& Liu, Wei. 2013. Dynamic Characteristics of Rotating Stall in Mixed Flow Pump. Journal of Applied Mathematics،Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-446696
Modern Language Association (MLA)
Li, Xiaojun…[et al.]. Dynamic Characteristics of Rotating Stall in Mixed Flow Pump. Journal of Applied Mathematics No. 2013 (2013), pp.1-12.
https://search.emarefa.net/detail/BIM-446696
American Medical Association (AMA)
Li, Xiaojun& Yuan, Shouqi& Pan, Zhongyong& Li, Yi& Liu, Wei. Dynamic Characteristics of Rotating Stall in Mixed Flow Pump. Journal of Applied Mathematics. 2013. Vol. 2013, no. 2013, pp.1-12.
https://search.emarefa.net/detail/BIM-446696
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-446696