{"id":18992,"date":"2025-02-14T13:43:14","date_gmt":"2025-02-14T13:43:14","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=18992"},"modified":"2025-02-14T13:43:15","modified_gmt":"2025-02-14T13:43:15","slug":"aeroelastic-loads-predictions-using-cfd-based-reduced-order-models","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/02\/14\/aeroelastic-loads-predictions-using-cfd-based-reduced-order-models\/","title":{"rendered":"AEROELASTIC LOADS PREDICTIONS USING CFD-BASED REDUCED ORDER MODELS"},"content":{"rendered":"\n<p><strong>Philipp Bekemeyer, Tobias Wunderlich, Stefan Gortz, Sascha Dahne<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: N\/A<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2019-105<\/strong><\/p>\n\n\n\n<p>Aircraft loads analysis is an inherently multidisciplinary process since aerodynamic forces, structural deformations and their correlations need to be accounted for. When increasing the \ufb01delity of underlying mono-disciplinary models, such as using computational \ufb02uid dynamics for aerodynamic forces, the coupled \ufb02uid-structure analysis becomes an increasingly costly process and ultimately limits the applicability within design and optimization. Reduced order models offer an approach to signi\ufb01cantly decrease the computational cost needed while retaining the \ufb01delity of the underlying model. This work proposes a reduced order aerodynamic model which can be coupled with varying structural models rather than developing a reduced order aeroelastic model for a \ufb01xed aerodynamic and structural model. This enables generating the model without an actual structural model being present and therefore allows the analysis of different structural models of interest without recomputing the aerodynamic model. First, sampling data is computed using computational \ufb02uid dynamics based on a few synthetic mode shapes. Second, a proper orthogonal decomposition-based reduced order model is derived for surface deformations and forces. Finally, a least-squares \ufb01t for surface deformations given from the current structural model of interest is performed to \ufb01nd proper orthogonal decomposition coef\ufb01cients while the overall vertical force is constrained to ensure that trimming conditions are met. Results are presented for the LANN wing at transonic \ufb02ow conditions and a longrange wing-body con\ufb01guration. While for the former different synthetic modes are applied and the generality of the method is demonstrated by signi\ufb01cantly altering the stiffness of the structural model, for the latter case a structural optimization is performed within each coupling step to highlight the adaptivity of the proposed method. Troughout accurate results are predicted showing only minor deviations for resulting surface force, elastic dispacements and optimized surface thicknesses.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/02\/IFASD-2019-105.pdf\">Read the full paper here<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Philipp Bekemeyer, Tobias Wunderlich, Stefan Gortz, Sascha Dahne<\/b><\/p>\n<p>DOI Number: N\/A<\/p>\n<p>Conference number: IFASD-2019-105<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2433,2452],"tags":[2949,1033,2950,2948],"class_list":["post-18992","post","type-post","status-publish","format-standard","hentry","category-1-ifasd-2019","category-reduced-order-models","tag-aeroelastic-model-reduction","tag-computational-fluid-dynamics","tag-large-transport-aircraft","tag-synthetic-modes","category-2433","category-2452","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18992","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=18992"}],"version-history":[{"count":1,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18992\/revisions"}],"predecessor-version":[{"id":18995,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/18992\/revisions\/18995"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=18992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=18992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=18992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}