Euler-Euler simulation of fluidized bed under the shear
碩士 === 國立臺灣大學 === 應用力學研究所 === 105 === We develop a three-dimensional Eulerian-Eulerian computational tool to model dense solid-liquid two-phase flow in the channel. By treating the solid phase as a continuum, a more computationally efficient simulation compared to the Eulerian-Lagrangian model can b...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2016
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| Online Access: | http://ndltd.ncl.edu.tw/handle/68276519336389645180 |
| Summary: | 碩士 === 國立臺灣大學 === 應用力學研究所 === 105 === We develop a three-dimensional Eulerian-Eulerian computational tool to model dense solid-liquid two-phase flow in the channel. By treating the solid phase as a continuum, a more computationally efficient simulation compared to the Eulerian-Lagrangian model can be achieved. The Large-eddy simulation (LES) is introduced to solve the turbulent flow, which employs a dynamic mixed model to deal with the sub-grid-scale field. As the Stokes drag is only suitable for the dilute case, the drag model for the dense suspension is employed. The collisional mechanism of particles is modeled based on the kinetic theory of granular flow, and the sediment frictional normal stress model isadopted to simulate the deposition of sediment. The model is validated with the experimental data of sheet flow. The model validation shows that our model is able to precisely replicate the mean sediment concentration profiles under different erosion criteria.
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