Experiment on settling of slender particles with large aspect ratio and correlation of the drag coefficient
文献类型：期刊论文
| 作者 | Fan, L; Mao, ZS; Yang, C |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2004-11-10 |
| 卷号 | 43期号:23页码:7664-7670 |
| 关键词 | cylinders sedimentation spheres fluids flow |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | The drag coefficient of slender particles is an important parameter to operations involved with them. In this paper, settling of slender particles with a large aspect ratio and of different materials in laminar Newtonian fluids is studied. It is observed that the particle orientation oscillates during settling and stabilizes to its equilibrium horizontal orientation eventually. Experiments are conducted in different fluids (water and glycerin solutions, quiescent or flowing) for particles with different densities (from 1125 to 8000 kg(.)m(-3)) and aspect ratios (from 4 to 50). It is found that the product of the drag coefficient and cosine of the orientation angle is independent of the particle aspect ratio and the bulk liquid flow. Instead of using the concept of sphericity, the drag coefficient of slender particles is effectively correlated with the orientation and the Reynolds number based on the particle cylindrical diameter. With the aid of the modified Archimedes number, the proposed general correlation C-D cos phi = (24/Re)(0.006983 + 0.6224Re(-1.046))-(rho(p)/rho(l))(-1.537)(Ar*)(0.8524) represents very well the experimental data under various experimental conditions with the average relative error of 9.4%. |
| 英文摘要 | The drag coefficient of slender particles is an important parameter to operations involved with them. In this paper, settling of slender particles with a large aspect ratio and of different materials in laminar Newtonian fluids is studied. It is observed that the particle orientation oscillates during settling and stabilizes to its equilibrium horizontal orientation eventually. Experiments are conducted in different fluids (water and glycerin solutions, quiescent or flowing) for particles with different densities (from 1125 to 8000 kg(.)m(-3)) and aspect ratios (from 4 to 50). It is found that the product of the drag coefficient and cosine of the orientation angle is independent of the particle aspect ratio and the bulk liquid flow. Instead of using the concept of sphericity, the drag coefficient of slender particles is effectively correlated with the orientation and the Reynolds number based on the particle cylindrical diameter. With the aid of the modified Archimedes number, the proposed general correlation C-D cos phi = (24/Re)(0.006983 + 0.6224Re(-1.046))-(rho(p)/rho(l))(-1.537)(Ar*)(0.8524) represents very well the experimental data under various experimental conditions with the average relative error of 9.4%. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CYLINDERS ; SEDIMENTATION ; SPHERES ; FLUIDS ; FLOW |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000224977600050 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4933]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China 2.Tsing Hua Univ, Dept Environm Sci & Engn, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fan, L,Mao, ZS,Yang, C. Experiment on settling of slender particles with large aspect ratio and correlation of the drag coefficient[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2004,43(23):7664-7670. |
| APA | Fan, L,Mao, ZS,&Yang, C.(2004).Experiment on settling of slender particles with large aspect ratio and correlation of the drag coefficient.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,43(23),7664-7670. |
| MLA | Fan, L,et al."Experiment on settling of slender particles with large aspect ratio and correlation of the drag coefficient".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 43.23(2004):7664-7670. |
入库方式： OAI收割
来源：过程工程研究所
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