{"id":18733,"date":"2024-12-12T13:27:03","date_gmt":"2024-12-12T13:27:03","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18733"},"modified":"2024-12-12T13:27:04","modified_gmt":"2024-12-12T13:27:04","slug":"fluid-mode-flutter-in-plane-transonic-flows","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2024\/12\/12\/fluid-mode-flutter-in-plane-transonic-flows\/","title":{"rendered":"FLUID-MODE FLUTTER IN PLANE TRANSONIC FLOWS"},"content":{"rendered":"\n<p><strong>Jens Nitzsche, Lisa M. Ringel, Christoph Kaiser, Holger Hennings<\/strong><\/p>\n\n\n\n<p><strong>DOI number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-006<\/strong><\/p>\n\n\n\n<p>We investigate the \ufb02utter behavior of 1) a typical-section OAT15A airfoil with a heave and a pitch degree of freedom and 2) a generic symmetric airfoil of variable thickness equipped with a \ufb02exible trailing-edge plate by means of RANS simulations. The linearized \ufb02utter stability problem in the pre-buffet region is approached with three different techniques: A Newton-based root search involving the p-k approximation (NPK), a rational function approximation (RFA) of the \ufb02uid-structure coupled frequency response and a time-domain eigenvalue identi\ufb01cation on the coupled impulse response obtained via succesive convolution (SCM). We emphasize on \ufb02utter instabilities resulting from the coupling of a structural mode and a \ufb02uid mode in separated \ufb02ow. We conclude that the buffet onset should be regarded as the \ufb02utter boundary in the limiting case of zero density and buffeting is essentially \ufb02utter.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2024\/12\/IFASD-2019-006.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Jens Nitzsche, Lisa M. Ringel, Christoph Kaiser, Holger Hennings<\/b><\/p>\n<p>DOI number: N\/A<\/p>\n<p>Conference number: IFASD-2019-006<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2433,2454],"tags":[2793,2794,2791,2795,2792,2001],"class_list":["post-18733","post","type-post","status-publish","format-standard","hentry","category-1-ifasd-2019","category-unsteady-cfd","tag-aerodynamic-resonance","tag-ow-separation","tag-uid-mode-utter","tag-p-k-method","tag-transonic-buffet","tag-unsteady-aerodynamics","category-2433","category-2454","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18733","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=18733"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18733\/revisions"}],"predecessor-version":[{"id":18735,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18733\/revisions\/18735"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18733"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18733"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18733"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}