NDLI: Optimization of Turbocharger Ported Shroud Compressor Stages

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Yin, Junfei Li, Penny Pees, Stephane
Copyright Year	2009
Abstract	With increasing low-end torque and high-power requirements, passenger vehicle applications need large map-width compressor-stages at high-pressure ratio (3.0 and above). Compressor stages in which wheels operate in a normal housing exhibit limitations in stability at high-pressure ratio and in maximal flow capacity. The application of a ported shroud typically improves the surge characteristics of a centrifugal compressor. In this paper, an optimisation procedure for ported-shroud compressor stages was developed based on Design Of Experiment (DOE) procedure. Two DOE procedures are used. The first one is used to optimize the port location, wheel exducer width and diffuser width; the second is used to optimise the housing volute throat area, diffuser width and diffuser outlet radius. The compressor-stage performance was obtained by using a commercial CFD package. After the first DOE, an experimental DOE with a reduced design space was carried out to obtain the optimised port location and wheel exducer width. After the second DOE and optimization, only most promising configurations were manufactured for tests. The DOEs’ procedures and results as well as the CFD results are discussed and analyzed in the paper. Finally, the relative difference between the CFD and tests are discussed. In comparison to the baseline ported-shroud housing, the final configuration has improved map width by 9%, an increased pressure ratio by 0.2 and a higher peak efficiency by about 1 point.
Sponsorship	International Gas Turbine Institute
Starting Page	1193
Ending Page	1201
Page Count	9
File Format	PDF
ISBN	9780791848883
DOI	10.1115/GT2009-59248
e-ISBN	9780791838495
Volume Number	Volume 7: Turbomachinery, Parts A and B
Conference Proceedings	ASME Turbo Expo 2009: Power for Land, Sea, and Air
Language	English
Publisher Date	2009-06-08
Publisher Place	Orlando, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Torque Stability Computational fluid dynamics Wheels Compressors Flow (dynamics) Pressure Surges Optimization Vehicles Design High pressure (physics) Turbochargers Diffusers
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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