{"id":16098,"date":"2024-04-12T09:14:00","date_gmt":"2024-04-12T09:14:00","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16098"},"modified":"2024-04-12T09:14:01","modified_gmt":"2024-04-12T09:14:01","slug":"numerical-modelling-of-cavity-enhanced-jet-interactions-in-a-scramjet","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/numerical-modelling-of-cavity-enhanced-jet-interactions-in-a-scramjet\/","title":{"rendered":"Numerical Modelling of Cavity Enhanced Jet Interactions in a Scramjet"},"content":{"rendered":"\n<p><strong>Tim Roos, Adrian S. Pudsey, Hideaki Ogawa, Mathew G. Bricalli<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-14<\/strong><\/p>\n\n\n\n<p>Cavities have been widely studied for mixing, flameholding and ignition enhancement in scramjet combustors. When used for this purpose, the cavity is commonly placed downstream of the fuel injector and<br>the cavity flowfield is unsteady in nature. Recently, a novel arrangement where the cavity placed upstream of the injector has been proposed for mixing enhancement, and there is some evidence that the<br>associated flowfield is steady. The present study compares Reynolds-averaged Navier-Stokes (RANS)<br>and unsteady RANS (URANS) simulations of the upstream cavity arrangement to assess the stability<br>of the flowfield and the ability of RANS to capture the one-dimensional performance of the flowfield.<br>It is found that the cavity flowfield is steady in nature, because the primary mechanism that drives<br>self-sustained oscillation in conventional cavity flow is absent in the upstream cavity arrangement. Both<br>simulation approaches also result in near identical predictions of key performance variables and flowfield<br>behaviour, demonstrating that one-dimensional mixing performance and the flowfield characteristics of<br>the upstream cavity geometry can be adequately captured using RANS.<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-14.pdf\">Read the full paper > <\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Tim Roos, Adrian S. Pudsey, Hideaki Ogawa, Mathew G. Bricalli<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-14<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1006,1010],"tags":[1033,1037,1036,1035,1034],"class_list":["post-16098","post","type-post","status-publish","format-standard","hentry","category-events","category-hisst-2022","category-hypersonic-fundamentals-and-history-hisst-2022","tag-computational-fluid-dynamics","tag-fuel-mixing","tag-jet-interaction","tag-upstream-cavity","tag-urans","category-993","category-1006","category-1010","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16098","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/comments?post=16098"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16098\/revisions"}],"predecessor-version":[{"id":16099,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16098\/revisions\/16099"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16098"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16098"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16098"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}