Open rotor centrebody scattering
This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible ef...
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| Veröffentlicht in: | Journal of sound and vibration 2014-01, Vol.333 (2), p.418-433 |
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| container_end_page | 433 |
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| container_issue | 2 |
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| container_title | Journal of sound and vibration |
| container_volume | 333 |
| creator | Kingan, M.J. Sureshkumar, P. |
| description | This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface. |
| doi_str_mv | 10.1016/j.jsv.2013.08.010 |
| format | Article |
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The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface.</description><identifier>ISSN: 0022-460X</identifier><identifier>EISSN: 1095-8568</identifier><identifier>DOI: 10.1016/j.jsv.2013.08.010</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Acoustic liners ; Acoustic scattering ; Engines ; Noise levels ; Rotors ; Scattering ; Sound ; Vibration</subject><ispartof>Journal of sound and vibration, 2014-01, Vol.333 (2), p.418-433</ispartof><rights>2013 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c429t-11c1f9c12db57499abd79726f5c69193477296d1c37f6df1f6c706692c42b2333</citedby><cites>FETCH-LOGICAL-c429t-11c1f9c12db57499abd79726f5c69193477296d1c37f6df1f6c706692c42b2333</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0022460X1300669X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,65309</link.rule.ids></links><search><creatorcontrib>Kingan, M.J.</creatorcontrib><creatorcontrib>Sureshkumar, P.</creatorcontrib><title>Open rotor centrebody scattering</title><title>Journal of sound and vibration</title><description>This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface.</description><subject>Acoustic liners</subject><subject>Acoustic scattering</subject><subject>Engines</subject><subject>Noise levels</subject><subject>Rotors</subject><subject>Scattering</subject><subject>Sound</subject><subject>Vibration</subject><issn>0022-460X</issn><issn>1095-8568</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNqNkUtLw0AURgdRsFZ_gLss3STeO88MrqT4gkI3Cu6GZB6SkCZ1Ji3035tS19rV3ZzzLe4h5BahQEB53xZt2hUUkBVQFoBwRmYIWuSlkOU5mQFQmnMJn5fkKqUWADRnfEay1cb3WRzGIWbW92P09eD2WbLVOPrY9F_X5CJUXfI3v3dOPp6f3hev-XL18rZ4XOaWUz3miBaDtkhdLRTXuqqd0orKIKzUqBlXimrp0DIVpAsYpFUgpaaTXlPG2JzcHXc3cfje-jSadZOs77qq98M2GVSSIgde8tNQpqko_0cFQ6Cy5CesCjr9k4OQE4pH1MYhpeiD2cRmXcW9QTCHHKY1Uw5zyGGgNFOOyXk4On564q7x0STb-N5610RvR-OG5g_7BxEBjuc</recordid><startdate>20140120</startdate><enddate>20140120</enddate><creator>Kingan, M.J.</creator><creator>Sureshkumar, P.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20140120</creationdate><title>Open rotor centrebody scattering</title><author>Kingan, M.J. ; Sureshkumar, P.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c429t-11c1f9c12db57499abd79726f5c69193477296d1c37f6df1f6c706692c42b2333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Acoustic liners</topic><topic>Acoustic scattering</topic><topic>Engines</topic><topic>Noise levels</topic><topic>Rotors</topic><topic>Scattering</topic><topic>Sound</topic><topic>Vibration</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kingan, M.J.</creatorcontrib><creatorcontrib>Sureshkumar, P.</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Journal of sound and vibration</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kingan, M.J.</au><au>Sureshkumar, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Open rotor centrebody scattering</atitle><jtitle>Journal of sound and vibration</jtitle><date>2014-01-20</date><risdate>2014</risdate><volume>333</volume><issue>2</issue><spage>418</spage><epage>433</epage><pages>418-433</pages><issn>0022-460X</issn><eissn>1095-8568</eissn><abstract>This paper investigates the effect of acoustic scattering from the centrebody of an advanced open rotor engine. The physical mechanisms governing the scattering process are investigated and formulae for predicting noise levels are presented. It is found that centrebody scattering has a negligible effect on rotor-alone tones produced by a subsonic rotor, however, the scattering effect can be significant for rotor-alone tones produced by a supersonic rotor and certain rotor–rotor interaction tones. The paper concludes with an analysis which shows that the centrebody scattered field may be significantly reduced by applying an acoustic liner to the centrebody surface.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.jsv.2013.08.010</doi><tpages>16</tpages></addata></record> |
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| ispartof | Journal of sound and vibration, 2014-01, Vol.333 (2), p.418-433 |
| issn | 0022-460X 1095-8568 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1762140484 |
| source | Elsevier ScienceDirect Journals |
| subjects | Acoustic liners Acoustic scattering Engines Noise levels Rotors Scattering Sound Vibration |
| title | Open rotor centrebody scattering |
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