Degree
Doctor of Philosophy (PhD)
Department
Cain Department of Chemical Engineering
Document Type
Dissertation
Abstract
Particle-laden flows are investigated numerically from a meso-scale perspective using Computational Fluid Dynamics coupled with Discrete Element Method (CFD-DEM) and from a micro-scale perspective using Particle Resolved Direct Numerical Simulation (PR-DNS). For the former, the dynamics of a pseudo-2D pulsed fluidized bed (PFB) consisting of 400,000 to 800,000 particles was investigated (Chapters 2 and 3). The focus is on the capabilities of CFD-DEM to (1) reproduce pattern formation in these systems and (2) further the understanding of the dynamics of PFB's as a function of pulsation parameters. In Chapter 4, a two-spheres system is investigated with a recently implemented PR-DNS code, using the Basilisk open source framework. A high-resolution study is performed to investigate the flow field structures and their relation to experienced hydrodynamic forces by the spheres under the influence of a wall. In Appendix A, some verification and validation cases are reported with both the aforementioned codes, presenting capabilities that can be further explored in future work.
Date
1-9-2020
Recommended Citation
Guedes de Oliveira, Daniel, "A Study of Particle-laden Flows from Meso and Micro-scale Perspectives" (2020). LSU Doctoral Dissertations. 5130.
https://repository.lsu.edu/gradschool_dissertations/5130
Committee Chair
Nandakumar, Krishnaswamy
DOI
10.31390/gradschool_dissertations.5130