CFD-PBM simulation of droplets size distribution in rotor-stator mixing devices | |
Qin, Chengpeng1,2; Chen, Chao1,2; Xiao, Qi1; Yang, Ning1; Yuan, Cansheng3; Kunkelmann, Christian4; Cetinkaya, Murat4; Muelheims, Kerstin4 | |
2016-11-22 | |
Source Publication | CHEMICAL ENGINEERING SCIENCE
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ISSN | 0009-2509 |
Volume | 155Issue:NOVPages:16-26 |
Abstract | Rotor-Stator mixing devices (RS) have found widespread application in mixing, dispersion and emulsification processes to acquire the desirable droplet size distribution (DSD) which is critical to the function and quality of products. Thus the precise control of DSD through the rational design and optimization of process or formulation is highly demanded. Computational fluid dynamics (CFD) becomes increasingly important to simulate the complex turbulence flow in RS devices which has significant impact on the final DSD. CFD can also be integrated with population balance equations (PBE) to predict the DSD as long as the droplet breakage and coalescence rates could be accurately modeled by the kernel functions. However, the underlying physics of droplet breakage and coalescence is complex and far from being well understood. We simulated the liquid-liquid two-phase flow and DSD for a weak coalescence emulsification system in a Megatron RS mixer with the CFD-PBM approach, then tentatively proposed a novel approach for correcting the breakage kernels based on the Energy-Minimization Multi-Scale (EMMS) concept. This method features the multi-scale resolution of energy dissipation, and utilizes the so-called meso-scale energy dissipation to derive a correction factor for the breakage rate for PBE. The results show that the new model can greatly improve the CFD-PBM simulation, and the DSD predicted is in good agreement with experiments, demonstrating the rationality and potential of this new approach. (C) 2016 Elsevier Ltd. All rights reserved. |
Keyword | Rotor-stator Device Emulsification Droplets Breakage Meso-scale Computational Fluid Dynamics Population Balance Modeling |
Subtype | Article |
WOS Headings | Science & Technology ; Technology |
DOI | 10.1016/j.ces.2016.07.034 |
Indexed By | SCI |
Language | 英语 |
WOS Keyword | POPULATION BALANCE-EQUATIONS ; BUBBLE-COLUMNS ; TURBULENT DISPERSIONS ; STABILITY CONDITION ; PIVOT TECHNIQUE ; MODEL ; FLOW ; DISCRETIZATION ; BREAKUP ; MIXERS |
WOS Research Area | Engineering |
WOS Subject | Engineering, Chemical |
Funding Organization | BASF ; National Natural Science Foundation of China(91434121) |
WOS ID | WOS:000385600400003 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.ipe.ac.cn/handle/122111/21570 |
Collection | 多相复杂系统国家重点实验室 |
Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.BASF Adv Chem Co Ltd, Shanghai 200137, Peoples R China 4.BASF SE, D-67056 Ludwigshafen, Germany |
Recommended Citation GB/T 7714 | Qin, Chengpeng,Chen, Chao,Xiao, Qi,et al. CFD-PBM simulation of droplets size distribution in rotor-stator mixing devices[J]. CHEMICAL ENGINEERING SCIENCE,2016,155(NOV):16-26. |
APA | Qin, Chengpeng.,Chen, Chao.,Xiao, Qi.,Yang, Ning.,Yuan, Cansheng.,...&Muelheims, Kerstin.(2016).CFD-PBM simulation of droplets size distribution in rotor-stator mixing devices.CHEMICAL ENGINEERING SCIENCE,155(NOV),16-26. |
MLA | Qin, Chengpeng,et al."CFD-PBM simulation of droplets size distribution in rotor-stator mixing devices".CHEMICAL ENGINEERING SCIENCE 155.NOV(2016):16-26. |
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CFD-PBM simulation o(4509KB) | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | Application Full Text |
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