Flow Control by Slot Position and Noise Baffle in a Self-Recirculation Casing Treatment on an Axial Fan-Rotor
Joint Authors
Li, Xiangjun
Spence, Stephen
Chen, Hua
Chu, Wuli
Gibson, Lee
Source
International Journal of Rotating Machinery
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-18, 18 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-01-11
Country of Publication
Egypt
No. of Pages
18
Main Subjects
Abstract EN
To address the situations where the casing treatment needs to be used to stabilize axial compressors through strong recirculation, this paper initiated a CFD study to investigate how the flow could be suitably controlled in the casing treatment to minimize the efficiency penalty and increase the flow range.
A counter-swirl self-recirculation casing treatment was first designed on a low speed axial fan rotor as a baseline case.
Then three different slot positions and the influence of including the noise baffle were numerically studied.
Based on the understanding of their coeffects, the shorter noise baffle was considered and it was found that the highest efficiency was achieved in the case of the upstream slot when the length of baffle was suitably adjusted to balance the incoming flow and recirculation.
The largest flow range was achieved by locating the slot at the most downstream position and using a 50% length baffle since it suitably controlled the recirculating flow and relieved the separation at the low-span region.
An optimization study showed that the optimum length of the baffle for efficiency was always larger than for the flow range.
Both of the two optimum values reduce as the slot moves downstream.
American Psychological Association (APA)
Li, Xiangjun& Spence, Stephen& Chen, Hua& Chu, Wuli& Gibson, Lee. 2017. Flow Control by Slot Position and Noise Baffle in a Self-Recirculation Casing Treatment on an Axial Fan-Rotor. International Journal of Rotating Machinery،Vol. 2017, no. 2017, pp.1-18.
https://search.emarefa.net/detail/BIM-1169651
Modern Language Association (MLA)
Li, Xiangjun…[et al.]. Flow Control by Slot Position and Noise Baffle in a Self-Recirculation Casing Treatment on an Axial Fan-Rotor. International Journal of Rotating Machinery No. 2017 (2017), pp.1-18.
https://search.emarefa.net/detail/BIM-1169651
American Medical Association (AMA)
Li, Xiangjun& Spence, Stephen& Chen, Hua& Chu, Wuli& Gibson, Lee. Flow Control by Slot Position and Noise Baffle in a Self-Recirculation Casing Treatment on an Axial Fan-Rotor. International Journal of Rotating Machinery. 2017. Vol. 2017, no. 2017, pp.1-18.
https://search.emarefa.net/detail/BIM-1169651
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1169651