| 内构件存在时提升管内流动及颗粒混合行为研究 |
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| 引用本文： | 刘会娥,魏飞,杨艳辉,金涌. 内构件存在时提升管内流动及颗粒混合行为研究[J]. 中国化学工程学报, 2003, 11(4): 371-376 |
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| 作者姓名： | 刘会娥 魏飞 杨艳辉 金涌 |
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| 作者单位： | [1]DepartmentofChemicalEngineering,TsinghuaUniversity,Beijing100084,China [2]Towhomcorrespondenceshouldbeaddressed,TsinghuaUniversity,Beijing100084,China |
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| 摘 要： | he hydrodynamics and solids mixing behavior in a riser with blunt internals are studied. A uniform radial distribution for solids fraction and particle velocity achieves near the internals. The turbulent velocity of particles near the wall increases with the addition of the internals, with the lateral solids mixing enhanced significantly. Probability density distribution of particle velocity is bimodal in the riser with internals, which is similar to that in the conventional riser, indicating that no significant difference in the micro flow structure exists between the riser with internals and the conventional riser. At the same time, the axial solids mixing behavior changes insignificantly with the addition of internals. These results indicate that the micro flow structure in the riser is very stable, which changes insignificantly with the change of the bed structure.
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| 关 键 词： | 内构件 提升管 管内流动 颗粒混合行为 流体力学 |
| 修稿时间： | |
Hydrodynamics and Solids Mixing Behavior in a Riser with Blunt Internals |
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| LIU Hui''e,WEI Fei,YANG Yanhui,JIN Yong. Hydrodynamics and Solids Mixing Behavior in a Riser with Blunt Internals[J]. Chinese Journal of Chemical Engineering, 2003, 11(4): 371-376 |
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| Authors: | LIU Hui''e WEI Fei YANG Yanhui JIN Yong |
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| Affiliation: | Department of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The hydrodynamics and solids mixing behavior in a riser with blunt internals are studied. A uniform radial distribution for solids fraction and particle velocity achieves near the internals. The turbulent velocity of particles near the wall increases with the addition of the internals, with the lateral solids mixing enhanced significantly. Probability density distribution of particle velocity is bimodal in the riser with internals, which is similar to that in the conventional riser, indicating that no significant difference in the micro flow structure exists between the riser with internals and the conventional riser. At the same time, the axial solids mixing behavior changes insignificantly with the addition of internals. These results indicate that the micro flow structure in the riser is very stable, which changes insignificantly with the change of the bed structure. |
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| Keywords: | riser internal hydrodynamics solids mixing behavior |
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