{"id":737,"date":"2022-03-08T10:29:33","date_gmt":"2022-03-08T10:29:33","guid":{"rendered":"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/?p=737"},"modified":"2022-03-08T10:37:53","modified_gmt":"2022-03-08T10:37:53","slug":"modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners","status":"publish","type":"post","link":"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\/","title":{"rendered":"Modelling of ducted noise sources in the proximity of acoustic liners"},"content":{"rendered":"\n

Journal of Sound and Vibration<\/h3>\n\n\n\n

Palleja-Cabre S., Tester B.J., Astley<\/em> R.J<\/h4>\n\n\n\n

Acoustic liners have traditionally been used in ducted systems to attenuate noise and are an essential treatment in modern commercial aircraft engines. Over-Tip-Rotor (OTR) liners installed in the duct casing over the fan rotor tip have been shown to provide further noise reductions than when installed in the intake. This paper focuses on modelling ducted point sources close to an acoustic liner. It is found that the source proximity to the liner surface has a significant impact on the source power output. This work offers insight on the source modification effects beyond the conventional approach in the design of liners solely based on acoustic absorption.<\/p>\n\n\n\n

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Go to the publication<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Journal of Sound and Vibration Palleja-Cabre S., Tester B.J., Astley R.J Acoustic liners have traditionally been used in ducted systems to attenuate noise and are an essential treatment in modern commercial aircraft engines. Over-Tip-Rotor (OTR) liners installed in the duct casing over the fan rotor tip have been shown to provide further noise reductions than … <\/p>\n

Continue reading “Modelling of ducted noise sources in the proximity of acoustic liners”<\/span><\/a><\/p>\n","protected":false},"author":4860,"featured_media":738,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[8],"class_list":["post-737","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-research","tag-research-impact","entry"],"yoast_head":"\nModelling of ducted noise sources in the proximity of acoustic liners - Institute of Sound and Vibration Research<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Modelling of ducted noise sources in the proximity of acoustic liners - Institute of Sound and Vibration Research\" \/>\n<meta property=\"og:description\" content=\"Journal of Sound and Vibration Palleja-Cabre S., Tester B.J., Astley R.J Acoustic liners have traditionally been used in ducted systems to attenuate noise and are an essential treatment in modern commercial aircraft engines. Over-Tip-Rotor (OTR) liners installed in the duct casing over the fan rotor tip have been shown to provide further noise reductions than … Continue reading "Modelling of ducted noise sources in the proximity of acoustic liners"\" \/>\n<meta property=\"og:url\" content=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\/\" \/>\n<meta property=\"og:site_name\" content=\"Institute of Sound and Vibration Research\" \/>\n<meta property=\"article:published_time\" content=\"2022-03-08T10:29:33+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2022-03-08T10:37:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/generic.wordpress.soton.ac.uk\/isvr\/wp-content\/uploads\/sites\/413\/2022\/03\/Half_Space_AND_Ducted_V2.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1781\" \/>\n\t<meta property=\"og:image:height\" content=\"762\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Vanui Mardanyan\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ISVRSouthampton\" \/>\n<meta name=\"twitter:site\" content=\"@ISVRSouthampton\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Vanui Mardanyan\" \/>\n\t<meta name=\"twitter:label2\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/\"},\"author\":{\"name\":\"Vanui Mardanyan\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/#\\\/schema\\\/person\\\/b27ebc581765f5c4ad0eab378d7d7897\"},\"headline\":\"Modelling of ducted noise sources in the proximity of acoustic liners\",\"datePublished\":\"2022-03-08T10:29:33+00:00\",\"dateModified\":\"2022-03-08T10:37:53+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/\"},\"wordCount\":133,\"image\":{\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/wp-content\\\/uploads\\\/sites\\\/413\\\/2022\\\/03\\\/Half_Space_AND_Ducted_V2.jpg\",\"keywords\":[\"Research Impact\"],\"articleSection\":[\"Research\"],\"inLanguage\":\"en-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/\",\"url\":\"https:\\\/\\\/generic.wordpress.soton.ac.uk\\\/isvr\\\/modelling-of-ducted-noise-sources-in-the-proximity-of-acoustic-liners\\\/\",\"name\":\"Modelling of ducted noise sources in the proximity of acoustic liners - 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