| dc.contributor.author | Punekar, J | en_US |
| dc.contributor.author | Avital, EJ | en_US |
| dc.contributor.author | Musafir, RE | en_US |
| dc.date.accessioned | 2017-10-04T10:26:39Z | |
| dc.date.issued | 2010 | en_US |
| dc.date.submitted | 2017-09-28T11:36:38.043Z | |
| dc.identifier.issn | 1874-8376 | en_US |
| dc.identifier.uri | http://qmro.qmul.ac.uk/xmlui/handle/123456789/26646 | |
| dc.description.abstract | Non-linear sound propagation is investigated computationally by simulating compressible time-developing mixing layers using the Large Eddy Simulation (LES) approach and solving the viscous Burgers Equation. The mixing layers are of convective Mach numbers of 0.4, 0.8 and 1.2. The LES results agree qualitatively with known flow behaviour. Mach waves are observed in the near sound field of the supersonic mixing layer computed by the LES. These waves show steepening typical to non-linear propagation. Further calculations using the Burgers equation support this finding, where the initial wave slope has a role in kicking them. No visible non-linear propagation effects were found for the subsonic mixing layers. The effects of geometrical spreading and viscosity are also considered. | en_US |
| dc.description.sponsorship | The support given by the UK Daphne Jackson trust is
kindly acknowledged as well as the support given by the
Royal Society under its international joint project scheme. | en_US |
| dc.format.extent | 11 - 20 (10) | en_US |
| dc.format.medium | Web | |
| dc.format.medium | Web | |
| dc.format.medium | Web | en_US |
| dc.format.medium | Web | en_US |
| dc.language | English | en_US |
| dc.publisher | Bentham Open | en_US |
| dc.relation.ispartof | Open Acoustics Journal | en_US |
| dc.rights | This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited. | |
| dc.subject | Mach waves | en_US |
| dc.subject | non linear propagation | en_US |
| dc.subject | large eddy simulation | en_US |
| dc.subject | Burgers equation | en_US |
| dc.title | Computations of Nonlinear Propagation of Sound Emitted from High Speed Mixing Layers | en_US |
| dc.type | Article | |
| dc.rights.holder | © Punekar et al.; Licensee Bentham Open | |
| dc.identifier.doi | 10.2174/1874837601003010011 | en_US |
| pubs.author-url | http://www.sems.qmul.ac.uk/staff/staff.php?e.avital@qmul.ac.uk | en_US |
| pubs.notes | No embargo | en_US |
| pubs.notes | Open access journal paper | en_US |
| pubs.publication-status | Published | en_US |
| pubs.publisher-url | http://www.bentham.org/open/toacoj/ | en_US |
| pubs.volume | 3 | en_US |
