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Modelling of turbulent jets and wall layers: extensions of Lighthill's acoustic analogy with application to computational aeroacoustics

Modelling of turbulent jets and wall layers: extensions of Lighthill's acoustic analogy with application to computational aeroacoustics
Modelling of turbulent jets and wall layers: extensions of Lighthill's acoustic analogy with application to computational aeroacoustics
Two extensions to Lighthill’s aeroacoustic analogy are presented. First, equivalent sources due to initial conditions are derived that supplement those due to boundary conditions, as given by Ffowcs Williams & Hawkings. The resulting exact inhomogeneous wave equation is then reformulated with pressure rather than density as the wave variable, and the right-hand side is rearranged using the energy equation with no additional assumptions. Applications to computational aeroacoustics are discussed, and illustrated with examples based on 2D and 3D simulations.
acoustic analogy, computational aeroacoustics, initial value problem, heat flux, jet, channel flow
9090209700
1-23
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Wright, M.C.M.
b7209187-993d-4f18-8003-9f41aaf88abf
Wesseling, P.
402e3517-e838-4a2f-a917-8ff8c4b6fd17
Oñate, E.
b00ee590-0955-4b89-9618-8dd0d7831e6f
Périaux, J.
26e9cd27-597d-4f21-ab35-57a11e7f4e3b
Morfey, C.L.
d5f9a8d0-7d8a-4915-a522-bf49dee111f2
Hu, Z.W.
dd985844-1e6b-44ba-9e1d-fa57c6c88d65
Wright, M.C.M.
b7209187-993d-4f18-8003-9f41aaf88abf
Wesseling, P.
402e3517-e838-4a2f-a917-8ff8c4b6fd17
Oñate, E.
b00ee590-0955-4b89-9618-8dd0d7831e6f
Périaux, J.
26e9cd27-597d-4f21-ab35-57a11e7f4e3b

Morfey, C.L., Hu, Z.W. and Wright, M.C.M. (2006) Modelling of turbulent jets and wall layers: extensions of Lighthill's acoustic analogy with application to computational aeroacoustics. Wesseling, P., Oñate, E. and Périaux, J. (eds.) ECCOMAS CFD 2006: European Conference on Computational Fluid Dynamics. 05 - 08 Sep 2006. pp. 1-23 .

Record type: Conference or Workshop Item (Paper)

Abstract

Two extensions to Lighthill’s aeroacoustic analogy are presented. First, equivalent sources due to initial conditions are derived that supplement those due to boundary conditions, as given by Ffowcs Williams & Hawkings. The resulting exact inhomogeneous wave equation is then reformulated with pressure rather than density as the wave variable, and the right-hand side is rearranged using the energy equation with no additional assumptions. Applications to computational aeroacoustics are discussed, and illustrated with examples based on 2D and 3D simulations.

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More information

Published date: 2006
Additional Information: Invited paper
Venue - Dates: ECCOMAS CFD 2006: European Conference on Computational Fluid Dynamics, 2006-09-05 - 2006-09-08
Keywords: acoustic analogy, computational aeroacoustics, initial value problem, heat flux, jet, channel flow
Organisations: Aerodynamics & Flight Mechanics

Identifiers

Local EPrints ID: 41983
URI: https://eprints.soton.ac.uk/id/eprint/41983
ISBN: 9090209700
PURE UUID: 14b75e77-aaa9-47ce-a9a0-d13a7389d6ce

Catalogue record

Date deposited: 25 Oct 2006
Last modified: 13 Mar 2019 21:13

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Contributors

Author: C.L. Morfey
Author: Z.W. Hu
Author: M.C.M. Wright
Editor: P. Wesseling
Editor: E. Oñate
Editor: J. Périaux

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