Investigation of the influence of Lighthill's source term parts in an automotive turbocharger compressor

Clemens Freidhager, Stefan Schoder, Andreas Renz, Stefan Becker, Manfred Kaltenbacher

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

Abstract

Lighthill’s inhomogeneous wave equation in combination with the Finite Element (FE) method is an adequate approach for computing pressure fluctuations inside a turbocharger compressor, giving multiple advantages. Firstly, computing fluctuations using FE are not influenced by numeric dissipation. Furthermore, this methodology allows investigating the influence of the additions connected to the compressor by interpolating Lighthill’s source terms onto different propagation grids. Lighthill’s source term consists of three different main parts (1) the Reynolds stress term, (2) the excess term, and (3) the viscous term. The influence of those three source term parts on propagation simulations in the inlet and outlet region of turbocharger compressors are investigated by comparing them with flow simulation results and measurements of a cold gas test rig. Furthermore, also the Ffowcs Williams-Hawkings approach was used applied for comparing simulation results.
Originalspracheenglisch
TitelTagungsband DAGA
Seiten1238-1241
PublikationsstatusVeröffentlicht - 20 Apr. 2022
VeranstaltungDAGA 2022 - 48. Jahrestagung für Akustik - Universität Stuttgart, Hybrider Event, Deutschland
Dauer: 21 März 202224 März 2022

Konferenz

KonferenzDAGA 2022 - 48. Jahrestagung für Akustik
KurztitelDAGA 2022
Land/GebietDeutschland
OrtHybrider Event
Zeitraum21/03/2224/03/22

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