Abstract
The background oriented schlieren (BOS) method is applied for visualization of gas flows. This method allows you to get not only quality, but also quantitative information about the investigated object, such, for example, as temperature of gas medium. The features of using the BOS method for determining the gas temperature of small axisymmetric plasma objects are considered. The BOS method is easy to implement compared to the classical schlieren method. Using the example of discharge with liquid non-metallic electrodes, the requirements for measurement accuracy and spatial resolution are determined. A method for calculating the temperature based on data obtained using BOS is described. The calculation method was checked using a test object. A possible processing error was found and its cause was shown. Another method of image processing that reduces the error is proposed.
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Barinov, Y.A. Features of the background oriented schlieren method for studying small axisymmetric plasma objects. J Vis 24, 1131–1139 (2021). https://doi.org/10.1007/s12650-021-00763-1
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DOI: https://doi.org/10.1007/s12650-021-00763-1