{"id":16153,"date":"2024-04-12T10:27:35","date_gmt":"2024-04-12T10:27:35","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16153"},"modified":"2024-04-12T10:27:35","modified_gmt":"2024-04-12T10:27:35","slug":"investigation-of-flame-stabilization-and-combustion-mode-in-a-hydrogen-fueled-scramjet-combustor-using-les-pasr-numerical-simulation","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/04\/12\/investigation-of-flame-stabilization-and-combustion-mode-in-a-hydrogen-fueled-scramjet-combustor-using-les-pasr-numerical-simulation\/","title":{"rendered":"Investigation of Flame Stabilization and Combustion mode in a Hydrogen Fueled Scramjet Combustor using LES-PaSR Numerical Simulation"},"content":{"rendered":"\n<p><strong>Seung-Min Jeong , Jeong-Yeol Choi<\/strong><\/p>\n\n\n\n<p><strong>DOI Number XXX-YYY-ZZZ<\/strong><\/p>\n\n\n\n<p><strong>Conference Number HiSST-2022-142<\/strong><\/p>\n\n\n\n<p>In our previous study, we conducted a two-dimensional delayed detached eddy simulation (DDES)<br>high-resolution numerical simulation on a laboratory-scale direct-connect hydrogen-fueled scramjet<br>combustor[1]. In this study, sampling data was accumulated up to 100 ms(millisecond) at each global<br>equivalence ratio case. The numerical results showed the formation\/propagation\/dissipation of pressure<br>and shock wave, so-called the \u201cupstream-traveling shock wave\u201d, induced by complex heat release in<br>the combustor. It was confirmed that this low-frequency combustion instability has order of 100 Hz,<br>and major instability frequency was shifted depending on changing of global equivalence ratio.<br>Dynamics of major instability frequency is derived identically from several experimental studies. The<br>previous numerical study showed underlying physics of low-frequency combustion instability on<br>scramjet combustor, however it has limitation, two-dimensional study. Therefore, in present study,<br>three-dimensional improved delayed detached eddy simulation (IDDES) with detailed laminar chemical<br>mechanism and partially stirred reactor (PaSR) model was performed to investigate more detailed<br>dynamics of low-frequency instability on scramjet combustor as preliminary staged. For high-resolution,<br>convective and viscous fluxes were handled by high-order accurate multi-dimensional limiting scheme.<br>Through comparison with supersonic co-axial jet experimental results, the constructed threedimensional LES-PaSR numerical framework has high-fidelity. The simulation was conducted under two<br>global equivalence ratio conditions of 0.35 and 0.45. Results showed dynamic of detailed reactive flowfield, and flame structure. A results of counter-rotating vortex pair (CRVP) shape inform that the effect<br>of different fuel injection pressure on fuel\/air mixing process and forming of entire reactive flow-filed<br>of scramjet combustor. Based on present preliminary numerical study, series of comprehensive<br>numerical simulation will be performed with tremendous sampling time up to 30 ms.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-142.pdf\" data-type=\"link\" data-id=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2023\/10\/HiSST-2022-142.pdf\">Read the full paper > <\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Seung-Min Jeong , Jeong-Yeol Choi<\/b><\/p>\n<p>DOI Number XXX-YYY-ZZZ<\/p>\n<p>Conference Number HiSST-2022-142<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1006,1013],"tags":[1098,1095,1097,492,1096],"class_list":["post-16153","post","type-post","status-publish","format-standard","hentry","category-events","category-hisst-2022","category-propulsion-systems-and-components-hisst-2022","tag-global-equivalence-ratio","tag-high-order-accurate","tag-improved-delayed-detached-simulation-iddes","tag-numerical-simulation","tag-scramjet-combustor","category-993","category-1006","category-1013","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16153","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=16153"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16153\/revisions"}],"predecessor-version":[{"id":16154,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16153\/revisions\/16154"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}