{"id":17180,"date":"2024-06-06T11:37:06","date_gmt":"2024-06-06T11:37:06","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=17180"},"modified":"2025-09-15T12:00:32","modified_gmt":"2025-09-15T12:00:32","slug":"design-of-a-nozzle-for-hypersonic-wind-tunnel-with-optimized-hyperbolic-geometry","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/06\/06\/design-of-a-nozzle-for-hypersonic-wind-tunnel-with-optimized-hyperbolic-geometry\/","title":{"rendered":"Design of a Nozzle for Hypersonic Wind Tunnel with Optimized Hyperbolic Geometry"},"content":{"rendered":"\n<p><strong>Masaki IIDA, Kohei SHIMAMURA<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2024-259<\/strong><\/p>\n\n\n\n<p>An expansion tube is a type of shock tube that can generate a high enthalpy flow simulating atmospheric entry. However, hypersonic flows have the problem that the diameter of the test flow becomes smaller due to significant boundary layer development. We designed a nozzle with a contour shape based on the hyperbolic equation to suppress the development of the boundary layer. We obtained the geometry of a hyperbolic nozzle using an optimization algorithm and evaluated its performance using CFD. As a result, we designed a hyperbolic nozzle with a smaller static pressure variance value of 0.00220 compared to 1.83 for the conical nozzle.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/06\/HiSST-2024-259.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Masaki IIDA, Kohei SHIMAMURA<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2024-259<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1407,1415],"tags":[586,1799,807],"class_list":["post-17180","post","type-post","status-publish","format-standard","hentry","category-events","category-11-hisst-2024","category-testing-evaluation","tag-expansion-tube","tag-hypersonic-nozzle","tag-optimization","category-993","category-1407","category-1415","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17180","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=17180"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17180\/revisions"}],"predecessor-version":[{"id":20726,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17180\/revisions\/20726"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=17180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=17180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=17180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}