caa a22 4500 606197885 CHVBK 20210128100931.0 cr unu---uuuuu 210128e20150301xx s 000 0 eng 10.1007/s00348-015-1927-5 doi (NATIONALLICENCE)springer-10.1007/s00348-015-1927-5 Raffel Markus Institute of Aerodynamics and Flow Technology, German Aerospace Center (DLR), Bunsenstraße 10, 37073, Göttingen, Germany aut Background-oriented schlieren (BOS) techniques [Elektronische Daten] [Markus Raffel] This article gives an overview of the background-oriented schlieren (BOS) technique, typical applications and literature in the field. BOS is an optical density visualization technique, belonging to the same family as schlieren photography, shadowgraphy or interferometry. In contrast to these older techniques, BOS uses correlation techniques on a background dot pattern to quantitatively characterize compressible and thermal flows with good spatial and temporal resolution. The main advantages of this technique, the experimental simplicity and the robustness of correlation-based digital analysis, mean that it is widely used, and variant versions are reviewed in the article. The advantages of each variant are reviewed, and further literature is provided for the reader. The Author(s), 2015 Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-17 0723-4864 56:3<1 2015 56 348 https://doi.org/10.1007/s00348-015-1927-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00348-015-1927-5 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Raffel Markus Institute of Aerodynamics and Flow Technology, German Aerospace Center (DLR), Bunsenstraße 10, 37073, Göttingen, Germany aut NATIONALLICENCE 773 0- Experiments in Fluids Springer Berlin Heidelberg 56/3(2015-03-01), 1-17 0723-4864 56:3<1 2015 56 348