Hydrodynamics of pulsed spouted beds: Effects of pulsation waveform,amplitude, and frequency |
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| Authors: | Maysam Saidi Goodarz Ahmadi John R. Grace C. Jim Lim |
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| Affiliation: | 1. Department of Mechanical Engineering, Amirkabir University of Technology, Tehran, Iran;2. Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, New York, USA;3. Department of Chemical and Biological Engineering, University of British Columbia, Vancouver, British Columbia, Canada |
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| Abstract: | The effect of flow pulsations is studied via a discrete element model on hydrodynamics of spouted bed, which is being used in many important industries like drying processes. Decreased horizontal air percolation and preserving upward momentum, increased particle circulation, increased particle traverse distance, and better homogeneity are resulted from flow pulsations in spouted beds. Among the waveforms studied, square and triangular waveforms differ most and least from steady spouting, respectively. The predictions indicate that the pulsed spouted bed has the potential to enhance both gas and particle motion, hence being useful in drying and other operations. |
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| Keywords: | Computational fluid dynamics discrete element method gas–solid system particles pulsation spouted bed |
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