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| Influence of drag force models on CFD-DEM simulation of spouted bed |
| Received:February 24, 2022 Revised:April 17, 2022 |
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| DOI：10.7511/jslxCMGM202211 |
| KeyWord:CFD-DEM spouted bed drag models unstructured grids |
| Author | Institution |
| 周连勇 |
浙江大学 能源工程学院 化工机械研究所, 杭州 |
| 赵永志 |
浙江大学 能源工程学院 化工机械研究所, 杭州 |
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| Abstract: |
| CFD-DEM has been widely used in the study of spouted beds,and the simulation accuracy of which is closely related to the drag models applied to handle the particle-fluid interaction force.With the aim of investigating the influence of different drag models on the simulation results of spouted bed,especially for the spouted bed discretized with unstructured girds,the gas-solid dynamics of a spouted bed with a conical base were simulated in seven drag models,respectively.Considering pressure drop,spouted height and particle velocity characteristics,Wen-Yu model and Gibilaro model predicted the most intensive gas-solid dynamics,followed by Di Felice,Syamlal-O'Brien,Gidaspow and Huilin-Gidaspow models,and the gas-solid dynamics predicted by BVK model was the gentlest.Because the two-phase system in this study was particle-dense,the smooth transition function of Huilin-Gidaspow model did not work and the results predicted by Gidaspow and Huilin-Gidaspow model were exactly the same. |
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