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An Experimental Investigation of Fluidization of Pebble Beds by Flows of Single-Phase and Two-Phase Media and Conditions for Prevention of this Fluidization

  • Heat and Mass Transfer and Physical Gasdynamics
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High Temperature Aims and scope

Abstract

An experimental investigation is performed of the process of fluidization of pebble beds by single-phase (water) and two-phase media. Both free beds and those loaded from above (with constant and variable loads) are investigated. Results are given for the critical velocity of the beginning of fluidization. A significant difference is revealed between the processes of fluidization by single-phase and two-phase media. A strong effect of the bubbling of gas through water is observed in the case of a two-phase medium. A calculation procedure based on the value of average dynamic velocity of the mixture is suggested for the description of the process of fluidization in a two-phase medium. The dependence of the critical velocity of the beginning of fluidization on the load value is found for a loaded bed. The forces required to prevent fluidization in a bed are analyzed with an arbitrary orientation of the apparatus. The load dependence of the friction force of the bed is determined experimentally.

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Authors and Affiliations

  1. All-Russia Research and Design Institute of Nuclear Power Engineering (VNIIAM), Moscow, 125171, Russia

    G. A. Filippov, L. E. Melamed, V. P. Mastyukin, M. V. Konditerov & A. I. Tropkina

Authors
  1. G. A. Filippov
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  2. L. E. Melamed
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  3. V. P. Mastyukin
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  4. M. V. Konditerov
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  5. A. I. Tropkina
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__________

Translated from Teplofizika Vysokikh Temperatur, Vol. 43, No. 3, 2005, pp. 453–459.

Original Russian Text Copyright © 2005 by G. A. Filippov, L. E. Melamed, V. P. Mastyukin, M. V. Konditerov, and A. I. Tropkina.

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Filippov, G.A., Melamed, L.E., Mastyukin, V.P. et al. An Experimental Investigation of Fluidization of Pebble Beds by Flows of Single-Phase and Two-Phase Media and Conditions for Prevention of this Fluidization. High Temp 43, 452–459 (2005). https://doi.org/10.1007/s10740-005-0084-6

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  • DOI: https://doi.org/10.1007/s10740-005-0084-6

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