Examination of the Acoustic Spectrum in the Generalized Acoustic Analogy for Heated Flows - Temperature Coupling Effects vs Direct Enthalpy Flux Generated Noise

Sarah Stirrat; Zamir Koshuriyan; Adrian Sescu

Examination of the Acoustic Spectrum in the Generalized Acoustic Analogy for Heated Flows - Temperature Coupling Effects vs Direct Enthalpy Flux Generated Noise

Sarah Stirrat, Zamir Koshuriyan, Adrian Sescu

Mathematics

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

Abstract

The generalized acoustic analogy remains one of the most robust jet noise prediction models for jets of arbitrary cross section. In 2011, Afsar, Goldstein & Fagan (AGF)[1] formulated a jet noise model which reduced the acoustic spectrum formula to one involving 11 independent components of the spectrum of the turbulence auto- covariance tensor. In this paper we calculate this spectral tensor using a validated in-house LES code to obtain the unsteady flow. We assess the difference between heated and cold inflow conditions at fixed Ma = Uj/c∞.

Original language	English
Title of host publication	International Conference on Flow Dynamics
Publication status	Published - 6 Nov 2023
Event	International Conference on Flow Dynamics - Tohoku University, Sendai, Japan Duration: 6 Nov 2023 → 8 Nov 2023 https://www.ifs.tohoku.ac.jp/icfd/2023/

Conference

Conference	International Conference on Flow Dynamics
Abbreviated title	ICFD-20
Country/Territory	Japan
City	Sendai
Period	6/11/23 → 8/11/23
Internet address	https://www.ifs.tohoku.ac.jp/icfd/2023/

Bibliographical note

This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy.

Access to Document

ICFD_2023_heated_jet_turbulence_acoustics
This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy
Accepted author manuscript, 1.06 MBLicence: CC BY

Cite this

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title = "Examination of the Acoustic Spectrum in the Generalized Acoustic Analogy for Heated Flows - Temperature Coupling Effects vs Direct Enthalpy Flux Generated Noise",

abstract = "The generalized acoustic analogy remains one of the most robust jet noise prediction models for jets of arbitrary cross section. In 2011, Afsar, Goldstein & Fagan (AGF)[1] formulated a jet noise model which reduced the acoustic spectrum formula to one involving 11 independent components of the spectrum of the turbulence auto- covariance tensor. In this paper we calculate this spectral tensor using a validated in-house LES code to obtain the unsteady flow. We assess the difference between heated and cold inflow conditions at fixed Ma = Uj/c∞.",

author = "Sarah Stirrat and Zamir Koshuriyan and Adrian Sescu",

note = "This is an author-produced version of the published paper. Uploaded in accordance with the University{\textquoteright}s Research Publications and Open Access policy.; International Conference on Flow Dynamics, ICFD-20 ; Conference date: 06-11-2023 Through 08-11-2023",

year = "2023",

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T1 - Examination of the Acoustic Spectrum in the Generalized Acoustic Analogy for Heated Flows - Temperature Coupling Effects vs Direct Enthalpy Flux Generated Noise

AU - Stirrat, Sarah

AU - Koshuriyan, Zamir

AU - Sescu, Adrian

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the University’s Research Publications and Open Access policy.

PY - 2023/11/6

Y1 - 2023/11/6

N2 - The generalized acoustic analogy remains one of the most robust jet noise prediction models for jets of arbitrary cross section. In 2011, Afsar, Goldstein & Fagan (AGF)[1] formulated a jet noise model which reduced the acoustic spectrum formula to one involving 11 independent components of the spectrum of the turbulence auto- covariance tensor. In this paper we calculate this spectral tensor using a validated in-house LES code to obtain the unsteady flow. We assess the difference between heated and cold inflow conditions at fixed Ma = Uj/c∞.

AB - The generalized acoustic analogy remains one of the most robust jet noise prediction models for jets of arbitrary cross section. In 2011, Afsar, Goldstein & Fagan (AGF)[1] formulated a jet noise model which reduced the acoustic spectrum formula to one involving 11 independent components of the spectrum of the turbulence auto- covariance tensor. In this paper we calculate this spectral tensor using a validated in-house LES code to obtain the unsteady flow. We assess the difference between heated and cold inflow conditions at fixed Ma = Uj/c∞.

M3 - Conference contribution

BT - International Conference on Flow Dynamics

T2 - International Conference on Flow Dynamics

Y2 - 6 November 2023 through 8 November 2023

ER -