Hidden Grid Background Oriented Schlieren in studying convective flows

Hidden Grid Background Oriented Schlieren in studying convective flows

In this paper, we present a new BOS (Background Oriented Schlieren), based on a hidden grid, for studying heat flows. In the setup, we record a grid-based intensity pattern whose phase map carries information about the temperature gradient. The background (undistorted) pattern is hidden in the light...

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Veröffentlicht in:Journal of physics. Conference series 2023-05, Vol.2509 (1), p.12023
Hauptverfasser: Ambrosini, Dario, Rubeis, Tullio de, Paoletti, Domenica, Ramaiah, Jagadesh, Gannavarpu, Rajshekhar
Format: Artikel
Sprache:eng
Schlagworte:
Convective flow
Fourier transforms
Heat transmission
Light sources
Physics
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Beschreibung
Zusammenfassung:In this paper, we present a new BOS (Background Oriented Schlieren), based on a hidden grid, for studying heat flows. In the setup, we record a grid-based intensity pattern whose phase map carries information about the temperature gradient. The background (undistorted) pattern is hidden in the light source. Quantitative analysis is obtained by a windowed Fourier transform approach. Some experimental results are given to demonstrate the feasibility of the technique.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2509/1/012023