{"id":17763,"date":"2024-08-14T09:33:14","date_gmt":"2024-08-14T09:33:14","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=17763"},"modified":"2024-08-16T09:05:36","modified_gmt":"2024-08-16T09:05:36","slug":"flutter-boundary-prediction-for-a-twin-enginetransport-flutter-model-using-a-linearized-unsteadysolver","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/08\/14\/flutter-boundary-prediction-for-a-twin-enginetransport-flutter-model-using-a-linearized-unsteadysolver\/","title":{"rendered":"FLUTTER BOUNDARY PREDICTION FOR A TWIN-ENGINE TRANSPORT FLUTTER MODEL USING A LINEARIZED UNSTEADY SOLVER"},"content":{"rendered":"\n<p><strong>Shuchi Yang, Zhicun Wang, Zhichao Zhang, P.C. Chen<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2017-039<\/strong><\/p>\n\n\n\n<p>A linearized unsteady solver, referred to as ZONA Unstructured Linearized Unsteady Solver (ZULUS), is developed to solve the linearized frequency-domain unsteady equation on an unstructured mesh using the steady background flow solution generated by the Navier-Stokes (N-S) solver. ZULUS can generate an accurate frequency-domain Generalized Aerodynamic Forces (GAF) in the small perturbation sense about a nonlinear steady flow condition with a transpiration boundary condition that is applied to the stationary surface mesh. The GAF can be directly plugged into the frequency-domain flutter solution techniques to generate flutter solutions rapidly. A linearized static aeroelastic analysis capability is also developed in ZULUS to include the static aeroelastic effects in the GAF. The measured flutter boundary of a twin-engine transport flutter model in the Transonic Dynamic Tunnel (TDT) of NASA Langley is used to validate ZULUS. It is found that the static aeroelastic effects have a major impact on the flutter boundary. With the static aeroelastic effects, the ZULUS&#8217; predicted flutter boundary correlates much better with the TDT measured data than that without the static aeroelastic effects.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/08\/IFASD-2017-039.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Shuchi Yang, Zhicun Wang, Zhichao Zhang, P.C. Chen<b\/><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2017-039<\/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":[1972,2033,2031,2032],"class_list":["post-17763","post","type-post","status-publish","format-standard","hentry","category-events","category-computational-aeroelasticity","category-ifasd-2017","tag-aeroelasticity","tag-generalized-aerodynamic-forces","tag-linearized-unsteady-solver","tag-transpiration-boundary-condition","category-993","category-1957","category-1953","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17763","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=17763"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17763\/revisions"}],"predecessor-version":[{"id":17903,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/17763\/revisions\/17903"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=17763"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=17763"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=17763"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}