Computationally efficient source grid selection and source interpolation in computational aeroacoustics applied to an axial fan

Andreas Wurzinger*, Manfred Kaltenbacher, Stefan Schoder

*Korrespondierende/r Autor/in für diese Arbeit

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

Abstract

The noise generation of an axial fan is mainly caused by flow-induced sound. For this fan case, a hybrid approach separating flow and acoustics is suitable due to its low Mach number flow. Such a computationally efficient hybrid workflow requires a robust conservative mesh-to-mesh transformation of the acoustic sources as well as a proper mesh refinement to guarantee good convergence behavior. In doing so, we focus on the mesh-to-mesh data interpolation. Two interpolation algorithms of different complexity are compared and applied to the aeroacoustic computation of an axial fan. The basic cell-centroid approach is generally suited for fine computational acoustic (CA) meshes, while the more complex cut-volume method yields better results for coarse acoustic meshes. Although the cell-centroid interpolation scheme produces source artifacts inside the propagation domain, a grid study using the grid convergence index shows monotonic convergence behavior for both interpolation methods.

Originalspracheenglisch
TitelINTER-NOISE and NOISE-CON Congress and Conference Proceedings
Redakteure/-innenTyler Dare, Stuart Bolton, Patricia Davies, Yutong Xue, Gordon Ebbitt
Herausgeber (Verlag)The Institute of Noise Control Engineering of the USA, Inc.
Seiten845-853
ISBN (elektronisch)9781732598652
DOIs
PublikationsstatusVeröffentlicht - 2021
Veranstaltung50th International Congress and Exposition of Noise Control Engineering: INTER-NOISE 2021 - Washington DC, Washington, Virtual, USA / Vereinigte Staaten
Dauer: 1 Aug 20215 Aug 2021

Konferenz

Konferenz50th International Congress and Exposition of Noise Control Engineering
LandUSA / Vereinigte Staaten
OrtWashington, Virtual
Zeitraum1/08/215/08/21

ASJC Scopus subject areas

  • Akustik und Ultraschall

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