Castro et al. [13, 14] and Kumar et al. [16] have also discussed role of solid flow for surface rippling.
The present paper investigates the heat transfer coefficient for different operating gas velocity and solids circulation flux, whilst covering the different hydrodynamic solid flow regimes of dilute, core annulus or dense mode.
A swelling-dependent two-fluid model (STFM) is developed for the liquid-solid flows of swelling particles in polyethylene reactors.
Upon finding the particle residence time, we calculated the solid flow rate out of the riser and along with the knowledge of solids flowing into the riser column we determined the riser inventory as a function of time.
Three levels of screw speed (1, 3 and 5 rpm), two levels of solid flow rate (12and 24 kg/h) and three levels of liquid flow rate (15, 25 and 35 lph) were selected.
To physically understand the underlying mechanism, we considered a radical assumption that the formation of ripples is initiated at a/c interface due to the erosion and re-deposition of Si atoms under the effect of solid flow.
This paper provides a brief review of current techniques in solid flow measurement and recent contributions of the multiphase flow approach to gas/solid flow systems and fluidization.
Then the model is verified in terms of solid flow patterns.
For example, it is believed that arc volcanism is derived from a combination of solid flow in the mantle wedge and fluid flow originating from the subducting slab.
In this study, we attempted to analyse the impact of solid flow patterns, bed design and operational conditions on solid mixing in a bubbling fluidized bed.
