Mixing of Particles with Mass

The Basset-Boussinesq-Oseen (BBO) equation can be simplified for gas-particle flows with a very small density ratio between the carrier phase and the discrete phase ( 10 ) and with the assumption of one-way coupling such that only the carrier phase has influence on the particle but not vice versa. The particles are governed by these nondimensional motion equations  

By definition, a larger Stokes number represents a larger or heavier particle, and a smaller or lighter particle has a smaller Stokes number. 

Three different Stokes numbers, 0.1, 1, and 10, were simulated with the same density, pp = 10, in this research. The particles are fed into the flow at the jet exit every time step and are advanced in time by the explicit RK3 scheme used for the carrier phase. The simulation results are shown in Fig. 9.6. 

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