{"id":18079,"date":"2024-08-22T08:21:17","date_gmt":"2024-08-22T08:21:17","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18079"},"modified":"2024-08-22T08:21:17","modified_gmt":"2024-08-22T08:21:17","slug":"flutter-analysis-for-the-second-aeroelastic-prediction-workshop","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/08\/22\/flutter-analysis-for-the-second-aeroelastic-prediction-workshop\/","title":{"rendered":"FLUTTER ANALYSIS FOR THE SECOND AEROELASTIC PREDICTION WORKSHOP"},"content":{"rendered":"\n<p><strong>Daniella E. Raveh<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2017-163<\/strong><\/p>\n\n\n\n<p>The paper presents \ufb02utter prediction and simulations that were performed with the EZNSS \ufb02ow solver for the second Aeroelastic Prediction Workshop (AePW). The reference test cases for the AePW are based on two wind tunnel experiments of the Benchmark Supercritical Wing (BSCW). Two cases are addressed, at different transonic \ufb02ow conditions: One case at lower Mach numbers of 0.74, 0\u00b0angle of attack (AoA), and one more physically complex case at Mach 0.85, 5\u00b0 AoA. The cases were analyzed with the EZNSS code, using several computational setups and turbulence models. The simulations at Mach 0.74, 0\u00b0 AoA were able to predict accurately the \ufb02utter response. A reduced-order model (ROM) for the unsteady aerodynamic forces was constructed and used to predict the \ufb02utter point. The ROM was shown to be an accurate and computationally ef\ufb01cient tool for \ufb02utter prediction. The higher Mach number case, at Mach 0.85, 5\u00b0AoA, which involves a strong shock, separated \ufb02ow behind the shock, and some \ufb02ow unsteadiness, was more challenging. In the static analysis, different turbulence models yielded different upper-surface shock positions, and none of the models was able to capture accurately the pressure recovery behind the shock. Flutter was computed via an aerodynamic ROM, and since there is no reference \ufb02utter point from wind tunnel tests, the \ufb02utter point was validated with full aeroelastic simulation.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/08\/IFASD-2017-163.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Daniella E. Raveh<b\/><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2017-163<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,1957,1953],"tags":[2274,2273],"class_list":["post-18079","post","type-post","status-publish","format-standard","hentry","category-events","category-computational-aeroelasticity","category-ifasd-2017","tag-aeroelastic-prediction-workshop","tag-flutter-analysis","category-993","category-1957","category-1953","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18079","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=18079"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18079\/revisions"}],"predecessor-version":[{"id":18081,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18079\/revisions\/18081"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}