Aerodynamics of ski jumping: experiments and CFD simulations |
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Authors: | W Meile E Reisenberger M Mayer B Schmölzer W Müller G Brenn |
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Affiliation: | (1) Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, Inffeldgasse 25/F, 8010 Graz, Austria;(2) Department for Biophysics, Medical University of Graz, Harrachgasse 21/4, 8010 Graz, Austria;(3) VRVis GmbH, Donau-City-Strasse 1, 1220 Vienna, Austria |
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Abstract: | The aerodynamic behaviour of a model ski jumper is investigated experimentally at full-scale Reynolds numbers and computationally applying a standard RANS code. In particular we focus on the influence of different postures on aerodynamic forces in a wide range of angles of attack. The experimental results proved to be in good agreement with full-scale measurements with athletes in much larger wind tunnels, and form a reliable basis for further predictions of the effects of position changes on the performance. The comparison of CFD results with the experiments shows poor agreement, but enables a clear outline of simulation potentials and limits when accurate predictions of effects from small variations are required. |
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