Print Email Facebook Twitter Isogeometric modeling and experimental investigation of moving-domain bridge aerodynamics Title Isogeometric modeling and experimental investigation of moving-domain bridge aerodynamics Author Helgedagsrud, Tore (Norwegian University of Science and Technology (NTNU)) Akkerman, I. (TU Delft Ship Hydromechanics and Structures) Bazilevs, Yuri (Brown University) Mathisen, Kjell (Norwegian University of Science and Technology (NTNU)) Øiseth, Ole (Norwegian University of Science and Technology (NTNU)) Date 2019 Abstract Computational fluid dynamics (CFD) and fluid–structure interaction (FSI) are growing disciplines in the aeroelastic analysis and design of long-span bridges, which, with their bluff body characteristics, offer major challenges to efficient simulation. In this paper, we employ isogeometric analysis (IGA) based on nonuniform rational B-splines (NURBS) to numerically simulate turbulent flows over moving bridge sections in three dimensions (3D). Stationary and dynamic analyses of two bridge sections, an idealized rectangular shape with aspect ratio 1∶10 and a 1∶50-scale model of the Hardanger bridge, were performed. Wind tunnel experiments and comparative finite-element (FE) analyses of the same sections were also conducted. Studies on the convergence, static dependencies on the angle of attack, and self-excited forces in terms of the aerodynamic derivatives show that IGA successfully captures the bluff-body flow characteristics and exhibits superior per-degree-of-freedom accuracy compared to the more traditional lower-order FE discretizations. To reference this document use: http://resolver.tudelft.nl/uuid:2d10669f-2d87-4498-8110-7261d30031f8 DOI https://doi.org/10.1061/(ASCE)EM.1943-7889.0001601 ISSN 0733-9399 Source Journal of Engineering Mechanics, 145 (5) Bibliographical note Accepted Author Manuscript Part of collection Institutional Repository Document type journal article Rights © 2019 Tore Helgedagsrud, I. Akkerman, Yuri Bazilevs, Kjell Mathisen, Ole Øiseth Files PDF Helgedagsrud2018b_preprint.pdf 5.05 MB Close viewer /islandora/object/uuid:2d10669f-2d87-4498-8110-7261d30031f8/datastream/OBJ/view