20

Velocity m/sec

Dust Outlet

FIG. 5.16.5 Axial gas velocity in a reverse-flow cyclone.

where:

up, vp, wp = the components of the particle velocities in the z, r, and 6 directions u, v, w = the gas velocities in the same directions u', v', and w' = the fluctuating components of the gas velocities dp = the particle diameter pp = the particle density

CD = the drag coefficient mp = the particle mass

In addition to Equations 5.16(5), the following equation applies:

Boysan, Ayers, and Swithenbank (1982) used a stochastic approach whereby the values of u', v', and w', which pre-

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