Particle Impaction and Flow through an Infinite Array of Cylinders

In this paper, the flow field of fluid and trajectory of particle are modeled using FLUENT 12.0. In this software, continuity, momentum and particle flow equations are discretized using the Finite Volume Method (FVM) to calculate the pressure and velocity distribution in the flow domain. A Reynolds number of a value up to 1000 is used to view the flow simulation behind the cylinder, and it is found that at about the value of 100 there is a formation of eddies in the flow. Particle trajectories are calculated using the Lagrangian method. In this model, ash particles of varying diameters are used for capturing over an aluminum cylinder of 50-micron diameter. The particles of lower diameter strictly follow the fluid laminar layers, but as the particle size increases, the trajectory of the particle gets straightened, and it gets impacted on the fiber collector. Finally, the inertial deposition efficiency is calculated and is plotted against the Stoke number. Different cylinder spacing is used, and the effect on capture efficiency is monitored. These results are compared with other theoretical models, and are found to be in excellent co-ordination. doi:10.14456/WJST.2014.9

Abstract licence: CC BY-NC-ND

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