{"id":16248,"date":"2024-04-12T13:19:27","date_gmt":"2024-04-12T13:19:27","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16248"},"modified":"2024-04-12T13:38:49","modified_gmt":"2024-04-12T13:38:49","slug":"dns-of-a-shock-wave-boundary-layer-interaction-on-a-ramp-with-surfaceroughness","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/dns-of-a-shock-wave-boundary-layer-interaction-on-a-ramp-with-surfaceroughness\/","title":{"rendered":"DNS of a Shock Wave-Boundary Layer Interaction on a Ramp with SurfaceRoughness"},"content":{"rendered":"\n<p><strong>Giuseppe Chiapparino, Christian Stemmer<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-373<\/strong><\/p>\n\n\n\n<p>Direct Numerical Simulations are performed to investigate roughness effects on a Mach 6 hypersonic<br>compression-corner flow. Different variants of a roughness patch placed upstream of the boundary-layer<br>smooth separation point are considered. The patches consist of sinusoidal elements, with modifications<br>in position and spanwise extension of the roughness. Compared to a smooth-wall case, all the rough<br>cases cause a delayed boundary-layer separation and hence a smaller recirculation bubble. Moreover,<br>the roughness-induced streamwise vorticity, which is convected downstream by the detached shear<br>layer, generates mushroom-like structures once the flow reattaches on the ramp. The properties of<br>such structures, although similar, reflect the character of the patch upstream of the bubble. The roughness inducing the locally largest flow distortion is responsible for the widest structure on the ramp,<br>characterized by the highest increase in wall-temperature peak. The patch occupying the entire width<br>of the domain generate instead the weakest vortices on the ramp.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-373.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-373.pdf\">Read the full paper > <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Giuseppe Chiapparino, Christian Stemmer<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-373<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1008,1006],"tags":[1220,678,1218,1219],"class_list":["post-16248","post","type-post","status-publish","format-standard","hentry","category-events","category-high-speed-aerodynamics-and-aerothermodynamics-hisst-2022","category-hisst-2022","tag-compression-corner","tag-hypersonic-boundary-layer-flow","tag-roughness-patch","tag-separation-region","category-993","category-1008","category-1006","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16248","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=16248"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16248\/revisions"}],"predecessor-version":[{"id":16268,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16248\/revisions\/16268"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}