Background-oriented schlieren (BOS) techniques
By Markus Raffel. 2015
436 citations recorded by the source corpus.
Abstract 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.
Subfields: Atmospheric Science, Computational Mechanics
View Paper: https://www.semanticscholar.org/paper/8cd2870554791513016edc24542b0694828e6741
How researchers see this paper
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In Atmospheric Science
- Shengze Cai
- M. Hargather
- Frederik Fuest
- G. Em Karniadakis
- Zhicheng Wang
- Gary S. Settles
- Y. Jeon
- C. Gray
In Computational Mechanics
- Shengze Cai
- G. Em Karniadakis
- Zhicheng Wang
- M. Hargather
- Frederik Fuest
- Gary S. Settles
- Y. Jeon
- C. Gray
Citations in the corpus
- Flow over an espresso cup: inferring 3-D velocity and pressure fields from tomographic background oriented Schlieren via physics-informed neural networks (2021, methodology): “Background oriented schlieren (BOS) imaging has become an effective technique for flow visualization and quantitative fluid measurement in recent years (Raffel et al. 2000; Richard & Raffel 2001; Raffel 2015).”
- A review of recent developments in schlieren and shadowgraph techniques (2017, methodology): “Because image cross-correlation algorithms average over their interrogation window size, BOS always delivers less image resolution than comparable traditional schlieren instruments [24].”