{"id":22903,"date":"2025-10-24T12:43:42","date_gmt":"2025-10-24T12:43:42","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=22903"},"modified":"2025-10-24T12:43:43","modified_gmt":"2025-10-24T12:43:43","slug":"simplified-reaction-model-of-n-dodecane-combustion-for-scramjet-combustor-applications","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/10\/24\/simplified-reaction-model-of-n-dodecane-combustion-for-scramjet-combustor-applications\/","title":{"rendered":"Simplified reaction model of n-dodecane combustion for scramjet combustor applications\u00a0"},"content":{"rendered":"\n<p><strong>Youngjin JUN, Seong-Kyun IM<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2025-138<\/strong><\/p>\n\n\n\n<p>The reliable operation of scramjet combustors is hindered by two major challenges: achieving ignition within sub-millisecond residence times and mitigating severe thermal loads on combustor walls. Regenerative cooling with hydrocarbon fuels offers a promising solution, as endothermic thermal cracking simultaneously enhances heat-sink capacity and generates reactive intermediates that promote ignition. Among candidate surrogates, n-dodecane is widely used due to its representative paraffin chemistry and well-characterized thermophysical properties. However, existing detailed mechanisms are too complex for computational fluid dynamics, while no dedicated simplified reaction model for n-dodecane has been available. This study develops a two-step global reaction model for n-dodecane-air combustion tailored to scramjet-relevant conditions. The rate parameters are optimized<br>against ignition delay time and laminar flame speed obtained from a reference detailed mechanism. A coarse-to-fine search combined with a sequential filtering framework identified robust parameter sets, ensuring a reasonable accuracy across a broad range of pressure, temperature, and equivalence ratio. Despite the model shows modest deviations under certain conditions, it offers sufficient accuracy for preliminary simulation studies while preserving computational efficiency.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/10\/HISST2025_138_paper.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Youngjin JUN, Seong-Kyun IM<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2025-138<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3361,3363],"tags":[3637,3636,614],"class_list":["post-22903","post","type-post","status-publish","format-standard","hentry","category-events","category-1-hisst-2025","category-propulsion-systems-components","tag-global-reaction","tag-n-dodecane","tag-scramjet","category-993","category-3361","category-3363","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22903","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=22903"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22903\/revisions"}],"predecessor-version":[{"id":22905,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/22903\/revisions\/22905"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=22903"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=22903"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=22903"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}