# An acoustic correction method for extracting sound signals

Wang, Z.K., Djambazov, G.S., Lai, C.-H. and Pericleous, K.A. (2004) *An acoustic correction method for extracting sound signals.* Computers & Mathematics with Applications, 47 (1). pp. 57-69. ISSN 0898-1221 (doi:10.1016/S0898-1221(04)90005-3)

## Abstract

Sound waves are propagating pressure fluctuations and are typically several orders of magnitude smaller than the pressure variations in the flow field that account for flow acceleration. On the other hand, these fluctuations travel at the speed of sound in the medium, not as a transported fluid quantity. Due to the above two properties, the Reynolds averaged Navier-Stokes (RANS) equations do not resolve the acoustic fluctuations. Direct numerical simulation of turbulent flow is still a prohibitively expensive tool to perform noise analysis. This paper proposes the acousticcorrectionmethod, an alternative and affordable tool based on a modified defect correction concept, which leads to an efficient algorithm for computational aeroacoustics and noise analysis.

Item Type: | Article |
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Uncontrolled Keywords: | acousticcorrection, defect correction, residual, aeroacoustics |

Subjects: | Q Science > QA Mathematics Q Science > QC Physics |

School / Department / Research Groups: | School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Fire Safety Engineering Group School of Computing & Mathematical Sciences > Department of Computer Systems Technology School of Computing & Mathematical Sciences > Department of Mathematical Sciences |

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Last Modified: | 16 Aug 2012 17:08 |

URI: | http://gala.gre.ac.uk/id/eprint/715 |

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