Characteristics of the falling particles velocity in the air with image analysis

Yasuo Katoh; Masahide Miyamoto; Hidetoshi Miike; Kazutoshi Koga

doi:10.1117/12.163752

2 December 1993 Characteristics of the falling-particles velocity in the air with image analysis

Yasuo Katoh, Masahide Miyamoto, Hidetoshi Miike, Kazutoshi Koga

Proceedings Volume 2005, Optical Diagnostics in Fluid and Thermal Flow; (1993) https://doi.org/10.1117/12.163752
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

This paper describes the characteristics of the falling particles velocity in the air with the image analysis. Glass beads in a mean diameter 200 micrometers were dropped from an exit of a small nozzle. An application of a new image analysis such as a spatial filtering method based on dynamic image processing with a sequential image data obtained by a high speed video system was carried out. A specified frequency was obtained by the spectrum analysis with the reduced signals. Once a specified frequency was reached, we could calculate the velocity of a particle using the following equation, Vo equals f X (lambda) . These values were compared with the other values obtained by the optical fiber sensor method which was dual light source/receiver type sensor. Consequently, there were slight differences between them.

Citation Download Citation

Yasuo Katoh, Masahide Miyamoto, Hidetoshi Miike, and Kazutoshi Koga "Characteristics of the falling-particles velocity in the air with image analysis", Proc. SPIE 2005, Optical Diagnostics in Fluid and Thermal Flow, (2 December 1993); https://doi.org/10.1117/12.163752

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