{"id":16461,"date":"2024-04-26T14:24:45","date_gmt":"2024-04-26T14:24:45","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16461"},"modified":"2024-04-26T14:24:46","modified_gmt":"2024-04-26T14:24:46","slug":"bow-shock-instability-issues-related-to-the-carbuncle-phenomenon","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/26\/bow-shock-instability-issues-related-to-the-carbuncle-phenomenon\/","title":{"rendered":"Bow Shock Instability Issues related to the Carbuncle Phenomenon"},"content":{"rendered":"\n<p><strong>Khalid A. Juhany, Mahmood Khalid and Amjad Ali Pasha<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-439<\/strong><\/p>\n\n\n\n<p>During a heat transfer study past blunt axisymmetric bodies and other tangent-cone and Gasjet models<br>equipped with forwarding flow facilities, the cylindrical shock exhibited atypical instability toward<br>complete and comprehensive numerical resolution. Such undesired flow behavior is not present in reallife flows when such blunt axisymmetric models are launched in the atmosphere or tested in wind<br>tunnels. The well-behaved shock in real life is observed as soon as the high Mach number flow impacts<br>the model. The region before and immediately after the shock is fraught with high and low Mach<br>numbers and extreme pressure conditions with invariable onset of disturbances traveling normal to the<br>shock. It is suspected that such complex physical changes in a small region give rise to numerical errors<br>that tend to compound in time and lead to shock instabilities, particularly close to the axis of symmetry.<br>It had been postulated that various second and fourth-order fluxes provisioned to capture shocks in<br>Euler flows may give rise to such instabilities, which it was reasoned would be removed through the<br>use of viscous flows computed using the Navier Stokes equation. The present studies were conducted<br>on a range of axisymmetric models. It was observed, however, that this carbuncle was most dominantly<br>demonstrated on a Gasjet model, which effectively is a blunt, leading model with a sharply truncated<br>front face.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-439.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-439.pdf\">Read the full paper ><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Khalid A. Juhany, Mahmood Khalid and Amjad Ali Pasha<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-439<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1008,1006],"tags":[],"class_list":["post-16461","post","type-post","status-publish","format-standard","hentry","category-high-speed-aerodynamics-and-aerothermodynamics-hisst-2022","category-hisst-2022","category-1008","category-1006","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16461","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=16461"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16461\/revisions"}],"predecessor-version":[{"id":16462,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16461\/revisions\/16462"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16461"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16461"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16461"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}