Using a kinetic theory approach incorporating interaction with the air to model granular flow down a chute

Zhang, Yonghao and Reese, Jason (2001) Using a kinetic theory approach incorporating interaction with the air to model granular flow down a chute. In: Handbook of Powder Technology Vol 10. Elsevier Science Ltd, Amsterdam, 255-261, Chapter 3.2. ISBN 0-444-50235-1

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Abstract

Kinetic theory-based models used to study the flow o f granular material down an inclined chute have usually ignored the effect o f the interstitial gas. In this paper, we derive new expressions for the drag force and energy dissipation caused by the interstitial gas. We apply this new model to fully-developed steady mixture flows down a simple inclined chute and compare the results to other simulations. Our results show that the interstitial gas plays a significant role in modifying the characteristics o f fully-developed flow, especially for small particles.