# A coarse grid extraction of sound signals for computational aeroacoustics

Djambazov, G.S., Lai, C.-H., Pericleous, K.A. and Wang, Z.-K.
(2002)
*A coarse grid extraction of sound signals for computational aeroacoustics.*
International Journal for Numerical Methods in Fluids, 40 (12).
pp. 1515-1525.
ISSN 0271-2091 (Print), 1097-0363 (Online)
(doi:10.1002/fld.408)

## Abstract

Sound waves are propagating pressure fluctuations, which 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 equations do not resolve the acoustic fluctuations. This paper discusses a defect correction method for this type of multi-scale problems in aeroacoustics. Numerical examples in one dimensional and two dimensional are used to illustrate the concept. Copyright (C) 2002 John Wiley & Sons, Ltd.

Item Type: | Article |
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Uncontrolled Keywords: | computational aeroacoustics, multi-scale, defect correction methods |

Subjects: | Q Science > QA Mathematics > QA75 Electronic computers. Computer science Q Science > QC Physics |

Pre-2014 Departments: | 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: | 14 Oct 2016 09:01 |

URI: | http://gala.gre.ac.uk/id/eprint/599 |

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