Poletto, M.; Bai, R.; Joseph, D. D. Propagation of voidage waves in a two-dimensional liquid-fluidized bed. (English) Zbl 1134.76642 Int. J. Multiphase Flow 21, No. 2, 223-239 (1995). Summary: Digital video recordings were used to obtain voidage distribution in a narrow fluidized bed with a small gap slightly larger than three particle diameters. From these recordings we determined auto-correlations and power spectra in spatial and temporal and joint spatial-temporal power spectra. Increases in the fluidization velocity lead to increasing disorganized non-periodic flows. Our experimental results are discussed in the light of experimental results and theories found in literature. Cited in 1 Document MSC: 76Txx Multiphase and multicomponent flows Keywords:liquid fluidization; homogeneous fluidization; voidage instabilities; non-homogeneous fluidization; two-dimensional fluidized bed PDFBibTeX XMLCite \textit{M. Poletto} et al., Int. J. Multiphase Flow 21, No. 2, 223--239 (1995; Zbl 1134.76642) Full Text: DOI