{"id":16963,"date":"2024-05-24T14:05:14","date_gmt":"2024-05-24T14:05:14","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16963"},"modified":"2025-09-15T13:17:39","modified_gmt":"2025-09-15T13:17:39","slug":"direct-numerical-simulation-of-supersonic-reacting-mixing-layers","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/05\/24\/direct-numerical-simulation-of-supersonic-reacting-mixing-layers\/","title":{"rendered":"Direct Numerical Simulation of Supersonic Reacting Mixing Layers"},"content":{"rendered":"\n<p><strong>Nicholas GIBBONS, Lachlan WHYBORN, Vincent WHEATLEY<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2024-159<\/strong><\/p>\n\n\n\n<p>A pair of high fidelity direct numerical simulations have been developed to study the interaction be-<br>tween turbulence and chemistry in high-speed combustion. One case considers a time-developing hy-<br>drogen\/air turbulent mixing layer taken from the literature, aiming to verify and demonstrate a newly<br>improved high-fidelity numerical scheme, and the other will investigate a hydrocarbon, i.e. ethylene,<br>combustion at effectively the same conditions. The numerical method that has been developed uses a<br>novel technique for detecting discontinuities to hybridise a low dissipation, central inviscid flux scheme,<br>with a high-dissipation, shock capturing scheme. The method is successfully verified against the ana-<br>lytic solution for a steepening nonlinear wave, then applied to the two mixing layer cases. The results<br>show a number of striking differences between the hydrogen and ethylene cases, including very differ-<br>ent regimes of premixed vs. nonpremixed combustion and different patterns of heat release over time.<br>Conditional statistics also show both cases have large variations in temperature that are not correlated<br>with mixture fraction, an important finding that will need to be addressed in model developments for<br>highly compressible combustion flows.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/05\/HiSST-2024-159.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Nicholas GIBBONS, Lachlan WHYBORN, Vincent WHEATLEY<\/b><\/p>\n<p>DOI Number: N\/A<br \/>\nConference number: HiSST-2024-159<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1409,1407],"tags":[712,1660,546],"class_list":["post-16963","post","type-post","status-publish","format-standard","hentry","category-events","category-high-speed-aerodynamics-and-aerothermodynamics-11-hisst-2024","category-11-hisst-2024","tag-combustion","tag-direct-numerical-simulation","tag-hypersonics","category-993","category-1409","category-1407","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16963","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=16963"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16963\/revisions"}],"predecessor-version":[{"id":20869,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16963\/revisions\/20869"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16963"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16963"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16963"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}