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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2005 Volume 43, Issue 3, Pages 452–458 (Mi tvt1339)

This article is cited in 1 paper

Heat and Mass Transfer and Physical Gasdynamics

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

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

The All Russian Scientific-Research and Design Institute of Atomic and Energy Engineering, Moscow

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.

UDC: 532.546+532.55

Received: 19.03.2004


 English version:
High Temperature, 2005, 43:3, 452–459


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