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AuthorHalawa, Taher
AuthorAlqaradawi, Mohamed
AuthorBadr, Osama
AuthorGadala, Mohamed S.
Available date2024-01-18T11:07:21Z
Publication Date2014-07
Publication NameASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2014
Identifierhttp://dx.doi.org/10.1115/ESDA2014-20589
CitationHalawa, T., Alqaradawi, M., Badr, O., & Gadala, M. S. (2014, July). Numerical simulation and control of rotating stall in a transonic centrifugal compressor. In Engineering Systems Design and Analysis (Vol. 45844, p. V002T11A024). American Society of Mechanical Engineers.
ISBN978-079184584-4
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84916894712&origin=inward
URIhttp://hdl.handle.net/10576/50922
AbstractThis study presents a numerical simulation of precursors and characteristics of rotating stall in a centrifugal compressor with vaned diffuser. The aim is to further understand the causes of stall inception, characteristics of stall process and to investigate reliable simulation of stall control methods and aid in their optimization. Initial numerical results show that the tip leakage flow and early separation in the impeller blades are causing weakness of radial velocity and deviation of fluid angle at impeller exit. Also, results show that the vaneless region between impeller and diffuser near shroud surface is the key factor of developing radial velocity deficiency into stall cells leading to pressure fluctuations on impeller blades. The present study confirms that injection of air at the shroud surface of the vaneless region has an effect on modifying fluid angle entering diffuser and on delaying of stall inception to occur at lower mass flow rates.
SponsorQatar National Research Fund (QNRF) - Grant No. NPRP 4 - 651 - 2 - 242
Languageen
PublisherWeb Portal ASME (American Society of Mechanical Engineers)
SubjectImpeller blades
Computational fluid dynamics
TitleNumerical simulation and control of rotating stall in a transonic centrifugal compressor
TypeConference Paper
Volume Number2
dc.accessType Abstract Only


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