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Experimental investigation of fluctuations in the velocity of the solid phase in a fluidized bed

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Journal of engineering physics Aims and scope

Abstract

The results are given on a spectral-correlation analysis of fluctuations in the velocity of the solid phase in installations having diameters of 0.3 and 0.7 m in a free fluidized bed, and one retarded by low-volume checkers, of sand (d=0.23 mm) and silica gel (d=0.19 mm).

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Abbreviations

Di, d:

diameter of installation and average particle diameter

u, u0 :

velocity of gas filtration in an empty cross section of the installation and velocity of start of fluidization

f:

frequency

H, h:

initial height of charge of material and height above gas-distribution grid

I, A:

temporal and spatial integral scales of fluctuations in velocity of solid phase

ρ :

density of material

σ, σ2 :

root-mean-square deviation from average velocity of motion of solid phase (pulsation velocity) and its dispersion

τ:

time of shift

R(τ):

estimate of normalized autocorrelation function

G(f):

smoothed normalized estimate of spectral density

v:

vertical

h:

horizontal

Literature cited

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Authors and Affiliations

  1. A. V. Lykov Institute of Heat and Mass Transfer, Academy of Sciences of the Belorussian SSR, Minsk

    Yu. E. Livshits & A. I. Tamarin

Authors
  1. Yu. E. Livshits
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  2. A. I. Tamarin
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 39, No. 1, pp. 19–25, July, 1980.

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Livshits, Y.E., Tamarin, A.I. Experimental investigation of fluctuations in the velocity of the solid phase in a fluidized bed. Journal of Engineering Physics 39, 727–731 (1980). https://doi.org/10.1007/BF00821823

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  • DOI: https://doi.org/10.1007/BF00821823

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