Redesign of a Compressor Stage for a High-Performance Electric Supercharger in a Heavily Downsized Engine

This paper reports a recent study of using inverse design method for the redesign of a centrifugal compressor stage used in an electric supercharger, including the impeller blade and volute.

Inverse Design of a Centrifugal Compressor Stage

The experimental measurements have very good agreement with CFD predictions and also have confirmed the performances are much better than the baseline design in terms of pressure ratio, efficiency and operating range at every operating speed.

In this paper, we present a novel 3D inverse design of a centrifugal compressor stage used in an electronic super-charger. An impeller wheel was first designed using the 3D inviscid code TURBOdesign1, following that a 2D inverse code TURBOdesign Volute was used for the volute design. The CFD analysis has been performed at design and off-design speeds to construct a complete compressor performance map, which will be compared with the predicted baseline compressor map. It will be shown that the redesigned compressor characteristics is significantly improved.

In this paper you will:


  • Learn why there is such a drive towards downsized engines to meet CO2 emissions standards.
  • Understand how a 3D Inverse Design method can be used to create significantly improved designs even when designers are forced to work in unfamiliar territory.
  • Discover the end results of the redesign and the additional insights gained as a result of this work.

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