| 分区多流域提升管EMMS曳力模型的构建 |
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| 引用本文： | 杜玉朋,杨朝合,朱迪.分区多流域提升管EMMS曳力模型的构建[J].中国石油大学学报(自然科学版),2017(1):176-182. |
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| 作者姓名： | 杜玉朋 杨朝合 朱迪 |
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| 作者单位： | 中国石油大学重质油国家重点实验室,山东青岛 266580,中国石油大学重质油国家重点实验室,山东青岛 266580,中国石化物探公司胜利分公司,山东东营 257086 |
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| 基金项目： | 国家“973”项目(2012CB215006) |
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| 摘 要： | 考虑CFB提升管快速床中因颗粒团聚物的存在而发生的气固相间曳力下滑的现象,建立基于能量最小多尺度方法(EMMS)的曳力模型,并将其与CFD两相流模型相耦合模拟传统等径提升管和新型分区多流域提升管两种不同结构的提升管。结果表明:将EMMS曳力模型耦合CFD双流体模型,可以合理地预测提升管内轴向与径向上的流场分布,实现对提升管内气固两相流动的准确表达;当CFB提升管的结构与操作工况发生变化时须重新寻求更为合适的曳力模型。
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| 关 键 词： | 两相流 曳力模型 流态化 分区多流域提升管 |
| 收稿时间： | 2016/4/11 0:00:00 |
Development of EMMS-based drag model for multi-regime riser |
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| DU Yupeng,YANG Chaohe and ZHU Di.Development of EMMS-based drag model for multi-regime riser[J].Journal of China University of Petroleum,2017(1):176-182. |
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| Authors: | DU Yupeng YANG Chaohe and ZHU Di |
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| Institution: | State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Qingdao 266580, China,State Key Laboratory of Heavy Oil Processing in China University of Petroleum, Qingdao 266580, China and SINOPEC Geophysical Corporation Shengli Branch, Dongying 257086, China |
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| Abstract: | Considering the phenomenon of gas-solid flow caused by the particle clusters in the circulating fluidized bed (CFB) riser, the energy minimum multi-scale method (EMMS)-based drag model was developed in this study. And the drag model was coupled with the two-phase flow model of CFD for simulations of a conventional riser and a novel multi-regime riser. It is found that the developed drag model can reasonably predict the flow distributions on both axial and radial directions, which leads to the correct characterization of the gas-solid flow in the riser. An appropriate drag models is needed when the configuration and operational conditions in CFB riser are changed. |
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| Keywords: | two-phase flow drag model fluidization multi-regime riser |
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