Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying
文献类型：期刊论文
| 作者 | Zhang, Yan ; Qiao JY(乔继延); Ren, Wan Long; Zhang XH(张旭辉); Li, Peng; Lu XB(鲁晓兵)
|
| 刊名 | PHYSICAL REVIEW FLUIDS
 |
| 出版日期 | 2024-03-08 |
| 卷号 | 9期号:2页码:24 |
| ISSN号 | 2469-990X |
| DOI | 10.1103/PhysRevFluids.9.034303 |
| 通讯作者 | Zhang, Xu-Hui(zhangxuhui@imech.ac.cn) |
| 英文摘要 | In this paper, we investigate the concentration instabilities that arise in vertical dense particulate flows during hydraulic conveying. The widely used two-fluid model for dense particulate flows is employed, and existing closure relations for drag correlation, stress tensors, etc., found in the literature are utilized. The ratio between the pipe diameter and particle size should be greater than 60 in this model. Then, an investigation is conducted to analyze the linear stability of the two-fluid model in a homogeneous and bounded pipe to determine the growth rates, frequency, and propagation velocity of small disturbances. Results show that the vertical dense particulate flows in hydraulic conveying exhibit instability across a broad spectrum of controlling parameters. We also obtain a fully nonlinear transient numerical solution for the two-fluid system using the finite difference method. The numerical solution of the model shows a high level of concordance with the linear stability analysis conducted, accurately capturing the corresponding growth rates in the region of wave formation. In addition, it has been found that small disturbances transform into saturation waves with finite amplitudes when the nonlinear effect becomes dominant. The saturation waves are asymmetrical due to the imbalance of inertia, wall shear stress, particle pressure, and particle viscosity mechanisms. The instable mode corresponds to plug flow or slug flow. |
| 分类号 | 二类 |
| WOS关键词 | WAVES ; INSTABILITIES ; FLUIDIZATION ; PREDICTION ; SIMULATION ; TRANSPORT ; VELOCITY ; MODELS |
| 资助项目 | National Natural Science Foundation of China[12302516] ; National Natural Science Foundation of China[12132018] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001187637700001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Zhang, Xu-Hui |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/94854]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yan,Qiao JY,Ren, Wan Long,et al. Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying[J]. PHYSICAL REVIEW FLUIDS,2024,9(2):24. |
| APA | Zhang, Yan,乔继延,Ren, Wan Long,张旭辉,Li, Peng,&鲁晓兵.(2024).Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying.PHYSICAL REVIEW FLUIDS,9(2),24. |
| MLA | Zhang, Yan,et al."Linear stability and numerical analysis of vertical dense particulate flows in hydraulic conveying".PHYSICAL REVIEW FLUIDS 9.2(2024):24. |
入库方式： OAI收割
来源：力学研究所
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