12th European Conference on Turbomachinery Fluid dynamics & Thermodynamics

Paper ID:

ETC2017-363

Main Topic:

Acoustics

https://doi.org/10.29008/ETC2017-363

Authors

Raimo Kabral - KTH Royal Institute of Technology
Yasser A. El Nemr - VIRTUAL VEHICLE Research Center
C. Ludwig - BMW Munich
R. Mirlach - BMW Munich
P. Koutsovasilis - BorgWarner
A. Masrane - BorgWarner
Mats Åbom - KTH Royal Institute of Technology

Abstract

The present paper focuses on the experimental determination of automotive twin-scroll turbine acoustic performance. The unique test-rig for automotive turbocharger acoustics at KTH CCGEx laboratory is further developed to enable testing of modern twin-scroll turbines under controlled laboratory conditions. It is shown how the passive acoustic properties of such turbines can be accurately characterized by means of an acoustic three-port formulation. Governing equations along with the new test-rig design are presented and discussed in detail. Furthermore, complementary results from the first experimental determination of twin-scroll turbine acoustic three-port data are presented.

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