Large-amplitude deep surge instabilities are studied in a turbocharger compression system with a one-dimensional (1D) engine simulation code. The system consists of an upstream compressor duct open to ambient, a centrifugal compressor, a downstream compressor duct, a large plenum, and a throttle valve exhausting to ambient. As the compressor mass flow rate is reduced below the peak pressure ratio for a given speed, mild surge oscillations occur at the Helmholtz resonance of the system, and a further reduction in flow rate results in deep surge considerably below the Helmholtz resonance. At the boundary with mild surge, the deep surge cycles exhibit, for the particular system considered, a long cycle period containing four distinct flow phases, including quiet (stable), instability growth (mild surge), blowdown (reversal), and recovery. Further reductions in flow rate decrease the deep surge cycle period, eliminate the quiet flow phase, and shorten the duration of the instability growth phase. Simulated oscillations of nondimensional flow rate, pressure, and speed parameters show good agreement with the experimental results available in literature, in terms of deep surge cycle flow phases along with the amplitude and frequency of the resulting fluctuations. The predictions illustrate that the quiet and instability growth phases, exhibited by this compression system, disappear as the plenum volume is substantially reduced.
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November 2016
Research-Article
Simulation of Deep Surge in a Turbocharger Compression System
Rick Dehner,
Rick Dehner
Department of Mechanical and
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: dehner.10@osu.edu
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: dehner.10@osu.edu
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Ahmet Selamet,
Ahmet Selamet
Department of Mechanical and
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: selamet.1@osu.edu
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: selamet.1@osu.edu
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Philip Keller,
Philip Keller
BorgWarner, Inc.,
Auburn Hills, MI 48326
Auburn Hills, MI 48326
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Michael Becker
Michael Becker
BorgWarner, Inc.,
Ludwigsburg 71636, Germany
Ludwigsburg 71636, Germany
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Rick Dehner
Department of Mechanical and
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: dehner.10@osu.edu
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: dehner.10@osu.edu
Ahmet Selamet
Department of Mechanical and
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: selamet.1@osu.edu
Aerospace Engineering,
The Ohio State University,
Columbus, OH 43210
e-mail: selamet.1@osu.edu
Philip Keller
BorgWarner, Inc.,
Auburn Hills, MI 48326
Auburn Hills, MI 48326
Michael Becker
BorgWarner, Inc.,
Ludwigsburg 71636, Germany
Ludwigsburg 71636, Germany
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received January 15, 2016; final manuscript received February 29, 2016; published online May 10, 2016. Editor: Kenneth C. Hall.
J. Turbomach. Nov 2016, 138(11): 111002 (12 pages)
Published Online: May 10, 2016
Article history
Received:
January 15, 2016
Revised:
February 29, 2016
Citation
Dehner, R., Selamet, A., Keller, P., and Becker, M. (May 10, 2016). "Simulation of Deep Surge in a Turbocharger Compression System." ASME. J. Turbomach. November 2016; 138(11): 111002. https://doi.org/10.1115/1.4033260
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