Study and Control of a Radial Vaned Diffuser Stall
Joint Authors
Marsan, Aurélien
Coste, Sylvain
Trebinjac, Isabelle
Leroy, Gilles
Source
International Journal of Rotating Machinery
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-12
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The aim of the present study is to evaluate the efficiency of a boundary layer suction technique in case of a centrifugal compressor stage in order to extend its stable operating range.
First, an analysis of the flow pattern within the radial vaned diffuser is presented.
It highlights the stall of the diffuser vanes when reaching a low massflow.
A boundary layer separation in the hub-suction side corner grows when decreasing the massflow from the nominal operating point to the surge and finally leads to a massive stall.
An aspiration strategy is investigated in order to control the stall.
The suction slot is put in the vicinity of the saddle that originates the main separating skin-friction line, identified thanks to the analysis of the skin-friction pattern.
Several aspiration massflow rates are tested, and two different modelings of the aspiration are evaluated.
Finally, an efficient control is reached with a removal of only 0,1% of the global massflow and leads—from a steady-state calculations point of view—to an increase by 40% of the compressor operating range extent.
American Psychological Association (APA)
Marsan, Aurélien& Trebinjac, Isabelle& Coste, Sylvain& Leroy, Gilles. 2012. Study and Control of a Radial Vaned Diffuser Stall. International Journal of Rotating Machinery،Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-480619
Modern Language Association (MLA)
Marsan, Aurélien…[et al.]. Study and Control of a Radial Vaned Diffuser Stall. International Journal of Rotating Machinery No. 2012 (2012), pp.1-12.
https://search.emarefa.net/detail/BIM-480619
American Medical Association (AMA)
Marsan, Aurélien& Trebinjac, Isabelle& Coste, Sylvain& Leroy, Gilles. Study and Control of a Radial Vaned Diffuser Stall. International Journal of Rotating Machinery. 2012. Vol. 2012, no. 2012, pp.1-12.
https://search.emarefa.net/detail/BIM-480619
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-480619