One-beam digital speckle interferometry applied to semimentation in fluids investigations

Ilia Roussev; Evtim Toshev; Pavel I. Koulev; Todor Partalin; Violeta Madjarova

doi:10.1117/12.321030

19 August 1998 One-beam digital speckle interferometry applied to semimentation in fluids investigations

Ilia Roussev, Evtim Toshev, Pavel I. Koulev, Todor Partalin, Violeta Madjarova

Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.321030
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary

Abstract

A fully-automated version of the Speckle Photography based on the Fast Fourier Transform, the One-Beam Digital Speckle- Interferometry, is used for investigation of sedimentation. The study is carried out with a Hele-Show cell. Both qualitative and quantitative results of slow sedimentation of spherical glass particles in mineral oil are presented. In the present article the processes of so called `fingers' formation and its development (the sedimentation front already lost its stability) are investigated. The authors paid also attention to the uniform sedimentation after the fingers fall down on the cell's bottom.

Citation Download Citation

Ilia Roussev, Evtim Toshev, Pavel I. Koulev, Todor Partalin, and Violeta Madjarova "One-beam digital speckle interferometry applied to semimentation in fluids investigations", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); https://doi.org/10.1117/12.321030

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