The flow field of a high pressure ratio centrifugal compressor for turbocharger applications is investigated using a three-dimensional Navier-Stokes solver. The compressor is composed of a double-splitter impeller followed by a vaned diffuser. The flow field of the transonic open-shrouded impeller is highly three-dimensional, and it is influenced by shock waves, tip leakage vortices and secondary flows. Their interactions generate complex flow structures which are convected and distorted through the impeller blades. Both steady and unsteady computations are performed in order to understand the physical mechanisms which govern the impeller flow field while the operation ranges from choke to surge. Detailed Laser Doppler Velocimetry (LDV) flow measurements are available at various cross-sections inside the impeller blades at both design and off-design operating conditions.
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ASME Turbo Expo 2008: Power for Land, Sea, and Air
June 9–13, 2008
Berlin, Germany
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-4316-1
PROCEEDINGS PAPER
Design and Off-Design Numerical Investigation of a Transonic Double-Splitter Centrifugal Compressor
Michele Marconcini,
Michele Marconcini
University of Florence, Firenze, Italy
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Filippo Rubechini,
Filippo Rubechini
University of Florence, Firenze, Italy
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Andrea Arnone,
Andrea Arnone
University of Florence, Firenze, Italy
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Seiichi Ibaraki
Seiichi Ibaraki
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
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Michele Marconcini
University of Florence, Firenze, Italy
Filippo Rubechini
University of Florence, Firenze, Italy
Andrea Arnone
University of Florence, Firenze, Italy
Seiichi Ibaraki
Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan
Paper No:
GT2008-50759, pp. 1571-1578; 8 pages
Published Online:
August 3, 2009
Citation
Marconcini, M, Rubechini, F, Arnone, A, & Ibaraki, S. "Design and Off-Design Numerical Investigation of a Transonic Double-Splitter Centrifugal Compressor." Proceedings of the ASME Turbo Expo 2008: Power for Land, Sea, and Air. Volume 6: Turbomachinery, Parts A, B, and C. Berlin, Germany. June 9–13, 2008. pp. 1571-1578. ASME. https://doi.org/10.1115/GT2008-50759
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