Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow

Zoé Jardon; Christophe Schram; Julien Christophe; Ugur Karban

doi:10.2514/6.2018-3929

Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow

Zoé Jardon, Christophe Schram, Julien Christophe, Ugur Karban

Research output: Chapter in Book/Report/Conference proceeding › Conference paper

1 Citation (Scopus)

Abstract

The present work aims at comparing the predictions that are obtained, for the noise emitted by a ducted diaphragm, using a numerical acoustic simulation and an analytical Green’s function. In both cases the flow model is obtained by means of Scale-Adaptive Simulations and interpreted as equivalent sources along the lines of the aeroacoustic analogy. The flow regime is weakly compressible with a maximum Mach number about 0.5. This work constitutes the very first step of a wider study aimed at quantifying the numerical robustness and accuracy of hybrid methods for weakly compressible flows.

Original language	English
Title of host publication	2018 AIAA/CEAS Aeroacoustics Conference
Number of pages	20
Edition	24th
DOIs	https://doi.org/10.2514/6.2018-3929
Publication status	Published - 29 Jun 2018
Event	24th American Institute of Aernautics and Astronautics/CEAS Aeroacoustics Conference Atlanta - Atlanta, Georgia, Atlanta, Georgia, United States Duration: 25 Jun 2018 → 29 Jun 2018

Conference

Conference	24th American Institute of Aernautics and Astronautics/CEAS Aeroacoustics Conference Atlanta
Country	United States
City	Atlanta, Georgia
Period	25/06/18 → 29/06/18

Keywords

Ducted diaphragm
Duct acoustics
Curle's analogy
Green's function
Computational aeroacoustics
Finite Element Method
Boundary Element Method
Scaled Adaptice Simulation

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10.2514/6.2018-3929

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title = "Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow",

abstract = "The present work aims at comparing the predictions that are obtained, for the noise emitted by a ducted diaphragm, using a numerical acoustic simulation and an analytical Green{\textquoteright}s function. In both cases the flow model is obtained by means of Scale-Adaptive Simulations and interpreted as equivalent sources along the lines of the aeroacoustic analogy. The flow regime is weakly compressible with a maximum Mach number about 0.5. This work constitutes the very first step of a wider study aimed at quantifying the numerical robustness and accuracy of hybrid methods for weakly compressible flows.",

keywords = "Ducted diaphragm, Duct acoustics, Curle's analogy, Green's function, Computational aeroacoustics, Finite Element Method, Boundary Element Method, Scaled Adaptice Simulation",

author = "Zo{\'e} Jardon and Christophe Schram and Julien Christophe and Ugur Karban",

year = "2018",

month = jun,

day = "29",

doi = "10.2514/6.2018-3929",

language = "English",

isbn = "9781624105609",

booktitle = "2018 AIAA/CEAS Aeroacoustics Conference",

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Jardon, Z, Schram, C, Christophe, J & Karban, U 2018, Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow. in 2018 AIAA/CEAS Aeroacoustics Conference. 24th edn, AIAA 2018-3929, 24th American Institute of Aernautics and Astronautics/CEAS Aeroacoustics Conference Atlanta, Atlanta, Georgia, United States, 25/06/18. https://doi.org/10.2514/6.2018-3929

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T1 - Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow

AU - Jardon, Zoé

AU - Schram, Christophe

AU - Christophe, Julien

AU - Karban, Ugur

PY - 2018/6/29

Y1 - 2018/6/29

N2 - The present work aims at comparing the predictions that are obtained, for the noise emitted by a ducted diaphragm, using a numerical acoustic simulation and an analytical Green’s function. In both cases the flow model is obtained by means of Scale-Adaptive Simulations and interpreted as equivalent sources along the lines of the aeroacoustic analogy. The flow regime is weakly compressible with a maximum Mach number about 0.5. This work constitutes the very first step of a wider study aimed at quantifying the numerical robustness and accuracy of hybrid methods for weakly compressible flows.

AB - The present work aims at comparing the predictions that are obtained, for the noise emitted by a ducted diaphragm, using a numerical acoustic simulation and an analytical Green’s function. In both cases the flow model is obtained by means of Scale-Adaptive Simulations and interpreted as equivalent sources along the lines of the aeroacoustic analogy. The flow regime is weakly compressible with a maximum Mach number about 0.5. This work constitutes the very first step of a wider study aimed at quantifying the numerical robustness and accuracy of hybrid methods for weakly compressible flows.

KW - Ducted diaphragm

KW - Duct acoustics

KW - Curle's analogy

KW - Green's function

KW - Computational aeroacoustics

KW - Finite Element Method

KW - Boundary Element Method

KW - Scaled Adaptice Simulation

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DO - 10.2514/6.2018-3929

M3 - Conference paper

SN - 9781624105609

BT - 2018 AIAA/CEAS Aeroacoustics Conference

T2 - 24th American Institute of Aernautics and Astronautics/CEAS Aeroacoustics Conference Atlanta

Y2 - 25 June 2018 through 29 June 2018

ER -

Hybrid Methods for the Prediction of the Noise Radiated by a Mach 0.5 Ducted Orifice Flow

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