{"id":23062,"date":"2025-10-25T14:32:25","date_gmt":"2025-10-25T14:32:25","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=23062"},"modified":"2025-10-25T14:32:26","modified_gmt":"2025-10-25T14:32:26","slug":"resolvent-and-sensitivity-analysis-for-investigating-and-delaying-linear-instabilities-in-quiet-hypersonic-wind-tunnel-nozzles","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/25\/resolvent-and-sensitivity-analysis-for-investigating-and-delaying-linear-instabilities-in-quiet-hypersonic-wind-tunnel-nozzles\/","title":{"rendered":"Resolvent and sensitivity analysis for investigating and delaying linear instabilities in quiet hypersonic wind tunnel nozzles"},"content":{"rendered":"\n<p><strong>Hugo LEMARQUAND, Mathieu LUGRIN, C\u00e9dric CONTENT, Cl\u00e9ment CAILLAUD, S\u00e9bastien ESQUIEU, Denis SIPP<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-073<\/strong><\/p>\n\n\n\n<p>Base-flow computations, resolvent, and sensitivity analyses are performed for a hypersonic wind tunnel nozzle at Mach 6. This research precisely identifies, through resolvent analysis, the locations and mechanisms governing the development of the G\u00f6rtler instability, as well as the first and second Mack modes, within a hypersonic wind tunnel nozzle. Additionally, sensitivity analysis of the resolvent optimal gain provides a pathway to mitigate instability growth, and consequently delay the transition, through wall temperature variation. This methodology can be extended to other forms of control, such as nozzle wall displacement and other key control parameters. Using the sensitivity results, an optimal profile is also designed to simultaneously control several unstable modes. These findings contribute to the advancement of quiet wind tunnels and ground testing facilities for hypersonic flows.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_73_paper.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Hugo LEMARQUAND, Mathieu LUGRIN, C\u00e9dric CONTENT, Cl\u00e9ment CAILLAUD, S\u00e9bastien ESQUIEU, Denis SIPP<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-073<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3367,3361],"tags":[1747,459,484,940,3706,3705,580,2306],"class_list":["post-23062","post","type-post","status-publish","format-standard","hentry","category-events","category-high-speed-aerodynamics-and-aerothermodynamics-with-application-to-hypersonic-regimes","category-1-hisst-2025","tag-boundary-layer-stability-2","tag-hypersonic-flow","tag-nozzle","tag-optimisation","tag-resolvent","tag-sensitivity","tag-transition","tag-wind-tunnel-2","category-993","category-3367","category-3361","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23062","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=23062"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23062\/revisions"}],"predecessor-version":[{"id":23064,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/23062\/revisions\/23064"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=23062"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=23062"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=23062"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}