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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29847

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Kinetic Theory Based CFD Modeling of Particulate Flows in Horizontal Pipes
The numerical simulation of fully developed gas–solid flow in a horizontal pipe is done using the eulerian-eulerian approach, also known as two fluids modeling as both phases are treated as continuum and inter-penetrating continua. The solid phase stresses are modeled using kinetic theory of granular flow (KTGF). The computed results for velocity profiles and pressure drop are compared with the experimental data. We observe that the convection and diffusion terms in the granular temperature cannot be neglected in gas solid flow simulation along a horizontal pipe. The particle-wall collision and lift also play important role in eulerian modeling. We also investigated the effect of flow parameters like gas velocity, particle properties and particle loading on pressure drop prediction in different pipe diameters. Pressure drop increases with gas velocity and particle loading. The gas velocity has the same effect ((proportional toU2 ) as single phase flow on pressure drop prediction. With respect to particle diameter, pressure drop first increases, reaches a peak and then decreases. The peak is a strong function of pipe bore.
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[18] V. Singh and L. Simon, Predicting pressure drop in pneumatic conveying using the discrete element modeling approach, Seventh International Conference on CFD in the Minerals and Process Industries, Melbourne, Australia, 2009.

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