Application of high-speed photography with rapidly changing color to a cold model circulating fluidized bed

Zengrong Zheng; J. R. Grace; Jingxu Zhu

doi:10.1117/12.145721

1 January 1993 Application of high-speed photography with rapidly changing color to a cold model circulating fluidized bed

Zengrong Zheng, J. R. Grace, Jingxu Zhu

Author Affiliations +

Proceedings Volume 1801, 20th International Congress on High Speed Photography and Photonics; (1993) https://doi.org/10.1117/12.145721
Event: 20th International Congress on High Speed Photography and Photonics, 1992, Victoria, BC, Canada

Abstract

A new technique, named `Microprocessor-Controlled Stroboscope High Speed Photography,' has been tested. This instrument uses sequential flashes of different colors, with the frequency controlled by a microprocessor to freeze the motion of individual moving tracer particles. By this means, a series of different color images of moving particles can be recorded on each frame of film. Accordingly, the velocities, accelerations, and trajectories of moving particles can be determined, and circulation patterns can be traced. Tests were carried out with particles of 100 to 500 micrometers diameter in a circulating fluidized bed (CFB), with measured velocities from 0.56 m/s to 10 m/s to demonstrate the usefulness of the new technique.

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Zengrong Zheng, J. R. Grace, and Jingxu Zhu "Application of high-speed photography with rapidly changing color to a cold model circulating fluidized bed", Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); https://doi.org/10.1117/12.145721

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