Reconstruction of the internal volume fraction for particle-liquid system from imaging indicators by refractive index matching | |
Sun, Yunhui2; Jiao, Jiajun2; An, Yi1; Wang, Xiaoliang2; Liu, Qingquan2 | |
刊名 | ACTA MECHANICA SINICA |
2024-02-01 | |
卷号 | 40期号:2页码:15 |
关键词 | Refractive index matching Volume fraction Area fraction Voronoi diagram Inclined flow |
ISSN号 | 0567-7718 |
DOI | 10.1007/s10409-023-23233-x |
通讯作者 | Wang, Xiaoliang(wangxiaoliang36@bit.edu.cn) |
英文摘要 | Refractive index matching (RIM) is widely used to investigate particle-liquid mixture flows. However, determining the volume fraction phi in RIM is generally empirical and lacks theoretical or experimental basis. To reasonably reconstruct the internal phi, this study performs systematic calibration experiments to study the relationship between phi and the imaging indicators. The results show that the model based on area fraction c(2D) will induce a large error for low phi owing to the instability of the particle's apparent size. The traditionally adopted proportional function phi = ac(2D) is only valid for phi near the calibration point. A predictive model is proposed based on the size of the Voronoi cell, d(poly), which proves to be more accurate and stable in RIM experiments. The d(poly)-based model is applied to dense granular flows down an inclined plane to study the internal profiles of phi and the bottom normal stress. |
资助项目 | National Natural Science Foundation of China[12032005] ; National Natural Science Foundation of China[12172057] |
WOS关键词 | SIZE DISTRIBUTIONS ; FLOWS ; VISCOSITY ; DENSITY |
WOS研究方向 | Engineering ; Mechanics |
语种 | 英语 |
WOS记录号 | WOS:001160667000009 |
资助机构 | National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/94546] |
专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
通讯作者 | Wang, Xiaoliang |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 2.Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Sun, Yunhui,Jiao, Jiajun,An, Yi,et al. Reconstruction of the internal volume fraction for particle-liquid system from imaging indicators by refractive index matching[J]. ACTA MECHANICA SINICA,2024,40(2):15. |
APA | Sun, Yunhui,Jiao, Jiajun,An, Yi,Wang, Xiaoliang,&Liu, Qingquan.(2024).Reconstruction of the internal volume fraction for particle-liquid system from imaging indicators by refractive index matching.ACTA MECHANICA SINICA,40(2),15. |
MLA | Sun, Yunhui,et al."Reconstruction of the internal volume fraction for particle-liquid system from imaging indicators by refractive index matching".ACTA MECHANICA SINICA 40.2(2024):15. |
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