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Article

High-Speed Time-Resolved Tomographic Particle Shadow Velocimetry Using Smartphones

Mechanical Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
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Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(20), 7094; https://doi.org/10.3390/app10207094
Received: 16 August 2020 / Revised: 10 September 2020 / Accepted: 14 September 2020 / Published: 13 October 2020
The video-capabilities of smartphones are rapidly improving both in pixel resolution and frame-rates. Herein we use four smartphones in the “slow-mo” option to perform time-resolved Tomographic Particle Shadow Velocimetry of a vortex ring, using 960 fps. We use background LED-illuminated diffusers, facing each camera, for shadow particle imaging. We discuss in-depth the challenges present in synchronizing the high-speed video capture on the smartphones and steps to overcome these challenges. The resulting 3-D velocity field is compared to an instantaneous, concurrent, high-resolution snapshot with four 4k-video cameras using dual-color to encode two time-steps on a single frame. This proof-of-concept demonstration, supports realistic low-cost alternatives to conventional 3-D experimental systems. View Full-Text
Keywords: smartphone; time-resolved; particle image velocimetry smartphone; time-resolved; particle image velocimetry
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MDPI and ACS Style

Aguirre-Pablo, A.A.; Langley, K.R.; Thoroddsen, S.T. High-Speed Time-Resolved Tomographic Particle Shadow Velocimetry Using Smartphones. Appl. Sci. 2020, 10, 7094. https://doi.org/10.3390/app10207094

AMA Style

Aguirre-Pablo AA, Langley KR, Thoroddsen ST. High-Speed Time-Resolved Tomographic Particle Shadow Velocimetry Using Smartphones. Applied Sciences. 2020; 10(20):7094. https://doi.org/10.3390/app10207094

Chicago/Turabian Style

Aguirre-Pablo, Andres A., Kenneth R. Langley, and Sigurdur T. Thoroddsen 2020. "High-Speed Time-Resolved Tomographic Particle Shadow Velocimetry Using Smartphones" Applied Sciences 10, no. 20: 7094. https://doi.org/10.3390/app10207094

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