{"id":16975,"date":"2024-05-24T14:22:11","date_gmt":"2024-05-24T14:22:11","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=16975"},"modified":"2025-09-15T13:15:06","modified_gmt":"2025-09-15T13:15:06","slug":"experimental-study-of-the-propagation-characteristics-of-heated-air-ethylene-rotating-detonation-wave-in-a-hollow-combustor","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/05\/24\/experimental-study-of-the-propagation-characteristics-of-heated-air-ethylene-rotating-detonation-wave-in-a-hollow-combustor\/","title":{"rendered":"Experimental Study of the Propagation Characteristics of Heated Air-Ethylene Rotating Detonation Wave in a Hollow Combustor"},"content":{"rendered":"\n<p><strong>Zhipeng SUN, Yue HUANG, Anjia SONG, Sijia GAO<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: HiSST-2024-166<\/strong><\/p>\n\n\n\n<p>This experimental study discusses the propagation characteristics of rotating detonation waves (RDWs) in a hollow rotating detonation combustor (HRDC) using heated air-ethylene as the working fluid. Through the combination of high-frequency pressure data and high-speed photographic images, a detailed analysis of RDW propagation under high-temperature incoming flow is conducted. Additionally, the effect of equivalence ratio on RDW stability is investigated. Stabilized RDWs were successfully achieved in the experiment at a maximum total air temperature of 711 K. For total air temperatures below 650 K, a wide range of injection equivalence ratios (1.0-1.3) allows for the attainment of stable single-wave modes. Experimental results demonstrate that under high-temperature incoming flow conditions, RDWs exhibit a significant peak pressure drop while experiencing minimal velocity loss. The color of the RDWs appears lighter and a noticeable deflagration glowing area is observed within the combustion chamber. Various modes of unstable propagation are observed in RDWs, including the coexistence of single-wave and deflagration modes, the coexistence of doublel waves and deflagration modes, as well as rapid switching between single and double waves. In a HRDC , the existence of a central reflow zone along with a substantial amount of deflagration causes fuel loss, resulting in the RDW front equivalence ratio that is frequently lower than the injection equivalence ratio. The stable single-wave mode is primarily achieved under fuel-rich conditions. As the temperature of the air increases, a higher equivalence ratio is required to obtain a stable single-wave mode, and the range of equivalence ratios becomes narrower.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/05\/HiSST-2024-166.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Zhipeng SUN, Yue HUANG, Anjia SONG, Sijia GAO<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: HiSST-2024-166<\/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":[1671,1669,1668,1670],"class_list":["post-16975","post","type-post","status-publish","format-standard","hentry","category-events","category-high-speed-aerodynamics-and-aerothermodynamics-11-hisst-2024","category-11-hisst-2024","tag-air-ethylene","tag-hollow-combustor","tag-propagation-characteristics","tag-rotating-detonation-wave","category-993","category-1409","category-1407","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16975","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=16975"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16975\/revisions"}],"predecessor-version":[{"id":20862,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/16975\/revisions\/20862"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=16975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=16975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=16975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}