Numerical Simulation and Experimental Study of the Gas–Solid Flow Behavior Inside a Full-Loop Circulating Fluidized Bed: Evaluation of Different Drag Models
| Autor: | Mary Ann Clarke, Yupeng Xu, William A. Rogers, Greggory Breault, Jonathan Tucker, Jordan Musser, Balaji Gopalan, Tingwen Li, Rupen Panday |
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| Rok vydání: | 2018 |
| Předmět: |
Pressure drop
Materials science business.industry General Chemical Engineering 02 engineering and technology General Chemistry Mechanics Computational fluid dynamics 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Discrete element method 020401 chemical engineering Particle image velocimetry Drag Standpipe (firefighting) Fluidized bed combustion Fluidization 0204 chemical engineering 0210 nano-technology business |
| Zdroj: | Industrial & Engineering Chemistry Research. 57:740-750 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.7b03817 |
| Popis: | Both experimental and computational studies of the fluidization of high-density polyethylene (HDPE) particles in a small-scale full-loop circulating fluidized bed (CFB) are conducted. Experimental measurements of pressure drop are taken at various locations along the bed. The solids circulation rate is measured with an advanced particle image velocimetry (PIV) technique. Bed height of the quasi-static region in the standpipe is also measured. Comparative numerical simulations are performed with a computational fluid dynamics solver utilizing a discrete element method (CFD-DEM). This paper examines the effect of different drag laws used in the CFD simulations through a detailed and direct comparison with experimental data from a small-scale, full-loop circulating fluidized bed. The Hill–Koch–Ladd drag correlation was shown to have good agreement with respect to system component pressure drop and inventory height in the standpipe. |
| Databáze: | OpenAIRE |
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