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Oversmoothing due to the DCT-PLS with a supersonic flow (courtesy of Dr. Kompenhans and Dr. Schroeder, DLR’s institute of aerodynamics and flow technology). A) Raw PIV data. B) PIV velocity field post-processed with the DCT-PLS. C) Difference between the raw and post-processed fields. D) Close-up that reveals the presence of oversmoothing along the shock wave.
