(170c) Drag Correlations for 3-D, Dilute Granular Flow
- Conference: AIChE Spring Meeting and Global Congress on Process Safety
- Year: 2006
- Proceeding: 2006 Spring Meeting & 2nd Global Congress on Process Safety
- Group: Fifth World Congress on Particle Technology
- Time: Wednesday, April 26, 2006 - 8:40am-9:00am
The results from hard-particle, discrete element simulations of two- and three- dimensional, dilute granular flows past an immersed sphere and cylinder are presented. Simulation measurements of the drag force, Fd, are expressed in terms of a drag coefficient, for 2-D, and for 3-D, where r is the particle density, is the upstream solid fraction, U is the upstream instantaneous velocity, and D and d are the sphere and particle diameters, respectively. The sphere's drag coefficient is a function of the flow Knudsen number,
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