[논문]Multi-scale fluid dynamics simulation based on MP-PIC-PBE method for PMMA suspension polymerization

Kim, Shin Hyuk; Lee, Jay H.; Braatz, Richard D.

doi:10.1016/j.compchemeng.2021.107391

[해외논문] Multi-scale fluid dynamics simulation based on MP-PIC-PBE method for PMMA suspension polymerization

Computers & chemical engineering, v.152, 2021년, pp.107391 -

Kim, Shin Hyuk (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) , Lee, Jay H. (Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology) , Braatz, Richard D. (Massachusetts Institute of Technology)

Abstract ▼ AI-Helper

Abstract This research presents an advanced multi-scale computational fluid dynamics (CFD) model based on the ‘multi-phase particle-in-cell coupled with the population balance equation (MP-PIC-PBE)’ method to predict the stationary continuous stirred tank reactor for methyl methacrylate suspension polymerization. The developed CFD model can realistically simulate the flow patterns of the free-flowing particles and the continuous carrier phase based on the Euler-Lagrangian frame and can track the change in particle size based on PBE. In particular, the model can predict the polymer properties by free-radical polymerization in a parcel through the method of moment equations. To validate the suggested CFD model, the simulation results are compared with the reported experimental data in the literature. Various case-studies are then conducted to investigate the effect of different blade angles (pitched blade angles of 30˚, 45˚, and 60˚) of the impeller on the mixing, the particle size change, particulate flow pattern, and polymer properties. The simulation results demonstrate the phenomena that the low-density particles rise in the larger density solvent by buoyancy and that the higher the blade angle, the smaller the resulting particles due to a higher rate of breakage. It is also found that the particulate flow is well mixed with a 45˚ blade angle. Highlights The multi-scale CFD model is developed for simulating MMA suspension polymerization in a CSTR. The associated mathematical equations of the CFD model are explained. The CFD model clearly shows suspended flow patterns between particles and solvent Effects of blade angles of impeller on particle size distribution and particle mixing are investigated.

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DOI : 10.1016/j.compchemeng.2021.107391
Elsevier : 저널 > 논문

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