(35d) Development and Application of Coupled CFD-DEM Models for Complex FLUID Particle Systems (FIBROUS MATERIAL, SLURRIES ETC…) in Industrial Scale Processes
- Conference: World Congress on Particle Technology
- Year: 2018
- Proceeding: 8th World Congress on Particle Technology
- Group: Applications of Particle Technology for Pharmaceuticals
- Time: Monday, April 23, 2018 - 4:24pm-4:42pm
The complexity of the fluid-solid flow present in these systems makes modeling them a challenging task. The primary source of difficulty is the wide range of length scales existing in these system, as the largest structures are a few meters whereas the momentum, heat and mass transfers occur at the micrometer scale of the interactions between particles and fluid and particles. Although, there are some inherent challenges in developing CFD-DEM models, such as large computational run times, the advent of fast GPU hardware and advanced algorithms are mitigating these limitations.
In this work, details of the DEM-CFD integration between two commercial softwares, RockyÂ® (DEM) and ANSYS FluentÂ® (CFD) will be addressed. In particular, the coupling formulation for non-spherical particles shapes and a wide variety of application that includes flexible fibrous material, slurry flows etcâ¦ will be evaluated. In addition, a few application examples, including both one-way and two-way coupling cases will also be presented. These models capture the discrete nature of the particle phase while maintaining the computational tractability. This is accomplished by not solving the detailed fluid field at the particle level, which enlarges the range of equipment and processes that can be studied with numerical simulations.