{"id":19422,"date":"2025-04-23T10:42:37","date_gmt":"2025-04-23T10:42:37","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=19422"},"modified":"2025-09-09T13:32:15","modified_gmt":"2025-09-09T13:32:15","slug":"a-general-solver-for-the-prediction-of-flutter-and-buffet-onset","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/04\/23\/a-general-solver-for-the-prediction-of-flutter-and-buffet-onset\/","title":{"rendered":"A general solver for the prediction of flutter and buffet onset"},"content":{"rendered":"\n<p><strong>David Quero, Christoph Kaiser, Jens Nitzsche<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: https:\/\/doi.org\/10.82439\/ceas-ifasd-2024-112<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2024-112<\/strong><\/p>\n\n\n\n<p>A versatile solver capable of predicting both flutter and buffet onset, while considering structural feedback, is introduced. The methodology involves computing the (generalized) aerodynamic forces using a linear-frequency-domain (LFD) solver based on linearized unsteady Reynolds-averaged Navier-Stokes equations (URANS) with an appropriate turbulence closure model. A state-space model of the aerodynamic forces is generated through interpolation of the frequency-domain samples, which is the basis of the p-L method. Eigenvalues corresponding to fluid modes may be directly determined, eliminating the need for a priori pole selection as required by traditional rational function approximation techniques. Consequently, the pre-buffet frequency is accurately represented by the imaginary part of the fluid mode\u2019s eigenvalue. With this representation of the fluid modes, a flutter solver is derived, which is able to predict both classical flutter and buffet onset values. The solver is applied to the supercritical OAT15A airfoil in the pre-buffet region, verifying its capability to predict both flutter and buffet onset values.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/04\/112.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>David Quero, Christoph Kaiser, Jens Nitzsche<\/b><\/p>\n<p>DOI Number: https:\/\/doi.org\/10.82439\/ceas-ifasd-2024-112<\/p>\n<p>Conference number: IFASD-2024-112<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[993,3022,3042],"tags":[3186,2192,975,2892,3187,2118],"class_list":["post-19422","post","type-post","status-publish","format-standard","hentry","category-events","category-ifasd-2024","category-unsteady-aerodynamics-1-ifasd-2024","tag-aeroelastic-derivatives","tag-buffet","tag-flutter","tag-loewner-framework","tag-mode-tracking-2","tag-transonic-flow-2","category-993","category-3022","category-3042","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19422","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=19422"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19422\/revisions"}],"predecessor-version":[{"id":20286,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19422\/revisions\/20286"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=19422"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=19422"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=19422"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}