{"id":19204,"date":"2025-03-11T10:52:07","date_gmt":"2025-03-11T10:52:07","guid":{"rendered":"https:\/\/aerospacerepository.org\/?p=19204"},"modified":"2025-09-10T09:55:32","modified_gmt":"2025-09-10T09:55:32","slug":"investigation-of-vortex-induced-vibrations-to-compare-reynolds-averaged-navier-stokes-and-detached-eddy-simulations","status":"publish","type":"post","link":"https:\/\/aerospacerepository.org\/index.php\/2025\/03\/11\/investigation-of-vortex-induced-vibrations-to-compare-reynolds-averaged-navier-stokes-and-detached-eddy-simulations\/","title":{"rendered":"Investigation of vortex-induced vibrations to compare Reynolds-averaged Navier-Stokes and detached-eddy simulations"},"content":{"rendered":"\n<p><strong>Kilian Streitenberger, Jens Nitzsche<\/strong><\/p>\n\n\n\n<p><strong>DOI Number: https:\/\/doi.org\/10.82439\/ceas-ifasd-2024-214<\/strong><\/p>\n\n\n\n<p><strong>Conference number: IFASD-2024-214<\/strong><\/p>\n\n\n\n<p>We investigate vortex-induced vibrations (VIV) of a vertically spring-suspended NACA0021 airfoil at very high angles of attack of 60\u00b0 and 70\u00b0 at a chord Reynolds number of<br>2.7 \u00d7 105 by comparison of two-dimensional Reynolds-averaged Navier-Stokes (RANS) and three-dimensional delayed detached-eddy (DDES) simulations. For the non-moving airfoil, the simulated flow field is already highly unsteady due to pronounced wake vortex shedding with a dominant Strouhal number of Sr \u2248 0.19 and with large qualitative differences in the spectral content of RANS and DDES integral forces. These differences decrease significantly when the airfoil is conducting sine-like motions either by prescribed forcing or via free fluidstructure interaction. No major differences occur between RANS and DDES in the resulting maximum VIV limit-cycle amplitudes under lock-in conditions, while the lock-in frequency range is slightly narrower for DDES. During lock-in a remarkable reduction in the turbulent intensity can be observed in the scale-resolving simulations.<\/p>\n\n\n\n<p><a href=\"https:\/\/aerospacerepository.org\/wp-content\/uploads\/2025\/03\/214.pdf\">Read the full paper here<\/a><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Kilian Streitenberger, Jens Nitzsche<\/b><\/p>\n<p>DOI Number: https:\/\/doi.org\/10.82439\/ceas-ifasd-2024-214<\/p>\n<p>Conference number: IFASD-2024-214<\/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":[3071,3070,3069,2062],"class_list":["post-19204","post","type-post","status-publish","format-standard","hentry","category-events","category-ifasd-2024","category-unsteady-aerodynamics-1-ifasd-2024","tag-detached-eddy-simulation","tag-limit-cycle-oscillations-2","tag-lock-in","tag-vortex-induced-vibrations","category-993","category-3022","category-3042","description-off"],"_links":{"self":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19204","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=19204"}],"version-history":[{"count":2,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19204\/revisions"}],"predecessor-version":[{"id":20372,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/posts\/19204\/revisions\/20372"}],"wp:attachment":[{"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/media?parent=19204"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/categories?post=19204"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/aerospacerepository.org\/index.php\/wp-json\/wp\/v2\/tags?post=19204"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}