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The Role of Meridional Geometry in Aerodynamic Design of Centrifugal Compressor

[+] Author Affiliations
Sasuga Ito, Kazutoyo Yamada, Masato Furukawa, Kaito Manabe

Kyushu University, Fukuoka, Japan

Nobuhito Oka

Mitsubishi Heavy Industries Engine & Turbocharger, Ltd., Kanagawa, Japan

Isao Tomita, Yoshihiro Hayashi

Mitsubishi Heavy Industries, Ltd., Nagasaki, Japan

Paper No. FEDSM2018-83398, pp. V003T12A022; 9 pages
doi:10.1115/FEDSM2018-83398
From:
  • ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting
  • Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics
  • Montreal, Quebec, Canada, July 15–20, 2018
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5157-9
  • Copyright © 2018 by ASME

abstract

Higher aerodynamic performance of turbochargers has been demanded because of vehicle engine down-sizing. Centrifugal compressors for automotive turbochargers require higher efficiency and wider operating range. Meridional geometry of the centrifugal compressors is one of their design specifications and it drastically affects the aerodynamic performance of the compressors. In this study, we designed the meridional geometry by using the aerodynamic design method based on a meridional viscous flow analysis and investigated the relation between the meridional geometry and the aerodynamic performance by analyzing meridional viscous flow calculation results and three-dimensional RANS calculation results. As a result, the relation between the boundary layer development near the shroud and the mass flux at the trailing edge was found out according to the meridional viscous flow calculation results. In addition, the relation and the performance improvement were confirmed according to experimental results.

Copyright © 2018 by ASME

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