CFD-DEM model of plugging in flow with cohesive particles

Area of Science:

• Multiphase flow dynamics
• Computational fluid dynamics (CFD)
• Discrete Element Method (DEM)

Background:

• Particle plugging is critical in industrial applications like petroleum flow assurance.
• Existing probabilistic models lack detailed insights into the plugging process.
• Understanding cohesive particle behavior is essential for preventing flow blockages.

Purpose of the Study:

• To develop and validate a CFD-DEM model for cohesive particle plugging.
• To investigate the influence of inter-particle collisions and plugging dynamics.
• To analyze the impact of varying flow parameters on plugging behavior.

Main Methods:

• A coupled CFD-DEM model was developed and validated against experimental data.
• Simulations were performed for ice-decane slurries.
• Parametric studies were conducted by varying Reynolds number, particle concentration, and surface energy.

Main Results:

• The CFD-DEM model successfully reproduced experimental benchmarks.
• Complex non-linear behaviors were observed when particle-wall adhesion decreased significantly relative to cohesion.
• Simulation results aligned with established flow maps from independent experiments.

Conclusions:

• The validated CFD-DEM model provides a robust tool for studying cohesive particle plugging.
• The study elucidates the intricate dynamics governing plugging phenomena.
• Findings contribute to improved flow assurance strategies in relevant industries.