{"id":22466,"date":"2025-10-21T13:53:19","date_gmt":"2025-10-21T13:53:19","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=22466"},"modified":"2025-10-21T13:53:20","modified_gmt":"2025-10-21T13:53:20","slug":"cfd-based-design-of-a-supersonic-blow-down-wind-tunnel","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/21\/cfd-based-design-of-a-supersonic-blow-down-wind-tunnel\/","title":{"rendered":"CFD-Based Design of a Supersonic Blow-Down Wind Tunnel"},"content":{"rendered":"\n<p><strong>Margani FRANCESCO, Riccardo NICOLETTI, Lua ARMANI, Seoeum HAN, Antonella INGENITO<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-320<\/strong><\/p>\n\n\n\n<p>This work presents the design and numerical characterization of a modular supersonic blow-down wind tunnel. The facility targets a nominal operating condition at M = 3.5 and implements interchangeable nozzles to cover M = 2.5\u20134.5. The design couples Method-of-Characteristics nozzle contours with viscous boundary-layer corrections, a controlled diffuser featuring a second throat for robust startability, and a reconfigurable test section with optical windows and a model support system. Computational fluid dynamics (CFD) is employed to verify start-up and steady operation under realistic ambient conditions, to quantify test-section flow quality, and to evaluate aerodynamic loads on the structure. These loads are used to perform a preliminary structural analysis to assess the thermo-mechanical response of windows, frames, and structural joints. A preliminary structural sizing is also provided for support legs adopting conservative allowables and safety factors. The results indicate that the facility can be reliably started and delivers a uniform supersonic core at the design Mach number, providing a repeatable platform for airbreathing propulsion and supersonic aerodynamics experiments.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_320_paper.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Margani FRANCESCO, Riccardo NICOLETTI, Lua ARMANI, Seoeum HAN, Antonella INGENITO<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-320<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3361,3368],"tags":[3414,3415,452,632],"class_list":["post-22466","post","type-post","status-publish","format-standard","hentry","category-events","category-1-hisst-2025","category-testing-evaluation-1-hisst-2025","tag-cfd-based","tag-fluid-dynamics","tag-supersonic","tag-wind-tunnel","category-993","category-3361","category-3368","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22466","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=22466"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22466\/revisions"}],"predecessor-version":[{"id":22481,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22466\/revisions\/22481"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=22466"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=22466"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=22466"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}