{"id":18917,"date":"2025-02-14T11:17:46","date_gmt":"2025-02-14T11:17:46","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18917"},"modified":"2025-02-14T11:17:47","modified_gmt":"2025-02-14T11:17:47","slug":"small-disturbance-cfd-based-aircraft-flutter-investigation-including-powered-engine-model","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/02\/14\/small-disturbance-cfd-based-aircraft-flutter-investigation-including-powered-engine-model\/","title":{"rendered":"SMALL-DISTURBANCE-CFD-BASED AIRCRAFT FLUTTER INVESTIGATION INCLUDING POWERED ENGINE MODEL"},"content":{"rendered":"\n<p><strong>Vladyslav Rozov, Marco Stuhlpfarrer, Mario Fernandez Osma, Christian Breitsamter<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-075<\/strong><\/p>\n\n\n\n<p>Aeroelastic behavior of aircraft is signi\ufb01cantly affected by the presence of engines mounted under the wings. Powered engines in\ufb02uence the unsteady aerodynamics on the one hand and lead to additional unsteady forces due to thrust vector oscillations on the other hand. This work focuses on the incorporation of aerodynamic engine effects into a small disturbance CFD framework to enhance the modeling accuracy of unsteady aerodynamics of aircraft. The effects are numerically modeled by mimicking physically reasonable \ufb02ow conditions at the intake and nozzle planes of the engine nacelle. Subsequently, the in\ufb02uence of the engine effects on the \ufb02utter behavior of an aircraft is studied employing the small-disturbance-CFD-based \ufb02utter analysis. The basis for the investigation is the Common Research Model, which represents a modern transonic commercial airliner with a cruise Mach number of 0.85. Two con\ufb01gurations are considered: aircraft with passive engines represented by through-\ufb02ow nacelles and aircraft with powered engines, where the novel small disturbance engine model is applied. The results are compared in terms of the \ufb02utter trends and the predicted \ufb02utter boundary. Furthermore, the impact of the modal induced thrust oscillations on the aeroelastic behavior of the aircraft is discussed.<\/p>\n\n\n\n<p><a href=\"http:\/\/small disturbance CFD, linearized CFD, linearized boundary conditions, aerodynamic engine effects, Common Research Model\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Vladyslav Rozov, Marco Stuhlpfarrer, Mario Fernandez Osma, Christian Breitsamter<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2019-075<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2440,2433],"tags":[2909,2910,2908,2058,2907],"class_list":["post-18917","post","type-post","status-publish","format-standard","hentry","category-computational-flutter","category-1-ifasd-2019","tag-aerodynamic-engine-effects","tag-common-research-model","tag-linearized-boundary-conditions","tag-linearized-cfd","tag-small-disturbance-cfd-2","category-2440","category-2433","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18917","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=18917"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18917\/revisions"}],"predecessor-version":[{"id":18919,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18917\/revisions\/18919"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18917"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}