Abstract
A method for the reconstruction of 3D density distributions of blade tip vortices is presented. The reconstruction is performed using a filtered back-projection on 2D density gradient data from a high-speed LS-BOS (laser-speckle-illuminated background-oriented Schlieren) setup, captured during the STAR (smart-twisting active rotor) project. Density profiles of blade tip vortices are presented, as well as comparisons of the size and development of the vortices. In addition the comparison to a PIV (particle image velocimetry) measurement is shown.
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Braukmann, J.N., Bauknecht, A., Wolf, C.C., Raffel, M. (2018). Towards Density Reconstruction of Helicopter Blade Tip Vortices from High-Speed Background-Oriented Schlieren Data. In: Dillmann, A., et al. New Results in Numerical and Experimental Fluid Mechanics XI. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 136. Springer, Cham. https://doi.org/10.1007/978-3-319-64519-3_34
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DOI: https://doi.org/10.1007/978-3-319-64519-3_34
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