Gas-solid flow with the slip velocity of particles in a horizontal channel

Mathematical Modelling of the Motion of Dust-Laden Gases in the Freeboard of CFB Using the Two-Fluid Approach

“…For the particulate phase, when the size of particles is often larger than the size of the viscous boundary sub-layer, the volume domain occupied by the dispersed phase has slightly shrunk, which gives always positive values for the solids' velocities in the wall vicinity. This method follows the numerical approach by Hussainov et al, (1996) has been employed here. All results are presented in the dimensionless way: the velocities of both phases are related to the gas-phase velocity at the centre of the flow (r=0), the turbulent energy is normalized to a square of the gas-phase velocity, and particle mass concentration is normalized to its value at (r=0).…”

A method for characterising solids translational and rotational motions using Multiple-Positron Emission Particle Tracking (Multiple-PEPT)

“…In some gas-solid flows, lift is significant, for example, in the flow of pulverized coal (Hussainov et al, 1996). The distribution of solids and flow field are also affected by solid rotation.…”

Modeling of high-concentration gas-particle flow in a horizontal channel

“…Passage to the limit of collisions between particles of equal radii is satisfied when collision with particle engagement is taken into account. Model [11] adjusted to allow for velocity correlations with and without particle engagement was tested by calculating vertical two-phase flows [19]. Thus, if condition (3.1) is satisfied, we obtain the velocity correlations without particle engagement (3.2)-(3.7); and if not, the correlations with engagement (3.8)-(3.13):…”

“…The model of the motion of solid particles in a plane horizontal channel considered in this study was compared with experiments [1] while the method of decomposition of the particle flow into impinging and rebounding streams, but without account for collisions between these streams and particle deposition, was considered in [19]. In addition, calculations were performed for high particle mass concentrations (up to 50 kg of particles per kg of air) and different particle sizes (from 100 µm to 1 mm).…”