Numerical investigation of the resonance behavior of flow‐excited Helmholtz resonators

Michael Weitz; Stefan Schoder; Manfred Kaltenbacher

doi:10.1002/pamm.201900033

Numerical investigation of the resonance behavior of flow‐excited Helmholtz resonators

Michael Weitz, Stefan Schoder, Manfred Kaltenbacher

Institute of Fundamentals and Theory in Electrical Engineering (4370)

Research output: Contribution to journal › Article › peer-review

Abstract

Functional gaps of cars combined with the underlying volume of air represent Helmholtz resonators that are excited at the Helmholtz frequency by the turbulent flow. Based on a model that describes the spatial coherence of pressure fluctuations beneath a turbulent boundary layer, we present how to compute an extensive synthetic excitation signal without performing computational fluid dynamics (CFD) computations. Moreover, this contribution shows the capabilities of complex fluid models to better predict the resonance behavior of Helmholtz resonators.

Original language	English
Number of pages	2
Journal	Proceedings in Applied Mathematics and Mechanics
Volume	19
Issue number	1
DOIs	https://doi.org/10.1002/pamm.201900033
Publication status	Published - 2019
Event	90th Annual Meeting of the International Association of Applied Mathematics and Mechanics: GAMM 2019 - Vienna, Austria Duration: 18 Feb 2019 → 22 Feb 2019

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10.1002/pamm.201900033Licence: CC BY 4.0

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title = "Numerical investigation of the resonance behavior of flow‐excited Helmholtz resonators",

abstract = "Functional gaps of cars combined with the underlying volume of air represent Helmholtz resonators that are excited at the Helmholtz frequency by the turbulent flow. Based on a model that describes the spatial coherence of pressure fluctuations beneath a turbulent boundary layer, we present how to compute an extensive synthetic excitation signal without performing computational fluid dynamics (CFD) computations. Moreover, this contribution shows the capabilities of complex fluid models to better predict the resonance behavior of Helmholtz resonators.",

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year = "2019",

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AU - Weitz, Michael

AU - Schoder, Stefan

AU - Kaltenbacher, Manfred

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AB - Functional gaps of cars combined with the underlying volume of air represent Helmholtz resonators that are excited at the Helmholtz frequency by the turbulent flow. Based on a model that describes the spatial coherence of pressure fluctuations beneath a turbulent boundary layer, we present how to compute an extensive synthetic excitation signal without performing computational fluid dynamics (CFD) computations. Moreover, this contribution shows the capabilities of complex fluid models to better predict the resonance behavior of Helmholtz resonators.

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U2 - 10.1002/pamm.201900033

DO - 10.1002/pamm.201900033

M3 - Article

SN - 1617-7061

VL - 19

JO - Proceedings in Applied Mathematics and Mechanics

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IS - 1

T2 - 90th Annual Meeting of the International Association of Applied Mathematics and Mechanics

Y2 - 18 February 2019 through 22 February 2019

ER -

Numerical investigation of the resonance behavior of flow‐excited Helmholtz resonators

Abstract

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