{"id":22696,"date":"2025-10-22T15:33:42","date_gmt":"2025-10-22T15:33:42","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=22696"},"modified":"2025-10-22T15:33:43","modified_gmt":"2025-10-22T15:33:43","slug":"geometrical-optimization-of-a-supersonic-laminar-nozzle-for-enhanced-aerothermodynamic-ground-testing","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/22\/geometrical-optimization-of-a-supersonic-laminar-nozzle-for-enhanced-aerothermodynamic-ground-testing\/","title":{"rendered":"Geometrical Optimization of a Supersonic Laminar Nozzle for Enhanced Aerothermodynamic Ground Testing"},"content":{"rendered":"\n<p><strong>Alberto TESTA, Pierre SCHROOYEN, Guillaume GROSSIR, Johan STEELANT<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-221<\/strong><\/p>\n\n\n\n<p>This paper presents a modular, automated framework for the early-stage aerodynamic optimization of quiet supersonic nozzles, leveraging Bayesian Optimization (BO) to minimize boundary-layer instability growth. The methodology integrates inviscid contour generation via the Method of Characteristics, viscous boundary-layer correction, and local Linear Stability Theory (LST) for transition prediction. The total amplification of first-mode and G\u00f6rtler instabilities is used as the objective function, with additional constraints on nozzle compactness, manufacturability, and quiet flow length. The BO loop demonstrates rapid convergence within a limited number of evaluations, accurately identifying optimal geometries that satisfy realistic facility constraints. The framework, verified against a previously validated pipeline, reveals key insights into the impact of geometric and thermal parameters\u2014such as throat height, expansion angle, and wall temperature distribution\u2014on transition onset. The approach is flexible and extendable to hypersonic regimes, making it a promising tool for the next-generation quiet tunnel design.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_221_paper.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Alberto TESTA, Pierre SCHROOYEN, Guillaume GROSSIR, Johan STEELANT<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-221<\/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":[3506,546,484,807,3551],"class_list":["post-22696","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-transition-2","tag-hypersonics","tag-nozzle","tag-optimization","tag-quiet-wind-tunnel","category-993","category-3367","category-3361","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22696","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=22696"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22696\/revisions"}],"predecessor-version":[{"id":22698,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22696\/revisions\/22698"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=22696"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=22696"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=22696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}