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The findings of the study may help optimize the initiation timing of LIPUS for T-B healing.

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Distributions of pressure and velocity in the main channels were studied in a radial flow cold model of a moving bed reactor, 500 mm in diameter, in four different gas flow modes, inward Z gas flow, inward II gas flow, outward Z gas flow, outward l l gas flow. It has been found that, in outward II gas flow mode, the axial non-uniformity of the gas is at a minimum. The following correlations are proposed for the momentum recovery factors K, and Kb:Pressure distributions in the main channels can be accurately predicted using K, and Kb.