Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow reactor with variable configurations of inner cylinder
Liu, Lu; Yang, Xiaogang; Yang, Jie; Li, Guang; Guo, Yanqing; Wang, Guichao; Wang, Lian-Ping
Dr Jie Yang Jie.Yang@hull.ac.uk
Lecturer in Applied Mathematics
Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow (TC) reactor with variable configurations of inner cylinder has been investigated using CFD modelling.
Particle dispersion was tracked based on the Eulerian-Lagrangian approach, where the reactant solution phase was solved in the Eulerian reference frame, while the particle dispersion was calculated by tracking a large number of particles with consideration of the hydrodynamic forces acting on particles and adopting actual particle properties measured from the particle synthesis experiments.
The simulation reveals that particle dispersion is significantly enhanced by increasing the inner cylinder rotational speed, characterized by particle distribution for both circular inner cylinder Taylor-Couette flow reactor (CTC) and lobed cross-section inner cylinder Taylor-Couette flow reactor (LTC). Particle trajectories or dispersion are influenced by the turbulent Taylor vortices. Particle radial dispersion affects the particle classification by presenting different particle axial velocities in radial direction, while particle axial dispersion can be seen as an indicator for global mixing occurring in the TC reactor, which is enhanced at high rotational speed, especially in the LTC. The calculated dispersion coefficient is found to be similar to the shape of particle size distribution found in the experiments.
Liu, L., Yang, X., Yang, J., Li, G., Guo, Y., Wang, G., & Wang, L. (2022). Effect of hydrodynamic heterogeneity on particle dispersion in a Taylor-Couette flow reactor with variable configurations of inner cylinder. Journal of the Taiwan Institute of Chemical Engineers, 131, Article 104141. https://doi.org/10.1016/j.jtice.2021.11.008
|Journal Article Type||Article|
|Acceptance Date||Nov 6, 2021|
|Online Publication Date||Nov 23, 2021|
|Deposit Date||Feb 2, 2022|
|Publicly Available Date||Oct 27, 2022|
|Journal||Journal of the Taiwan Institute of Chemical Engineers|
|Peer Reviewed||Peer Reviewed|
|Keywords||Multiphase flow model; Taylor-Couette flow reactor; Eulerian-Lagrangian approach; Particle dispersion|
Publisher Licence URL
© 2021 The Author(s). Published by Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)