Quantitative flow visualization by hidden grid background oriented schlieren
نویسندگان
چکیده
The paper introduces hidden grid background oriented schlieren for quantitative study and visualization of natural convection heat transfer. In this technique, the refractive index variation, induced by temperature gradient, is encoded in recorded signal phase through distortion a pattern. (undistorted) pattern implicit (or hidden) light source. Quantitative estimation map obtained windowed Fourier transform. This method offers localized processing using joint space-frequency representation. performance practically demonstrated investigating convective flow, demanding task due to its comparatively small
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ژورنال
عنوان ژورنال: Optics and Lasers in Engineering
سال: 2023
ISSN: ['1873-0302', '0143-8166']
DOI: https://doi.org/10.1016/j.optlaseng.2022.107307