Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session A41: Particle-Laden Flows: Particle-Resolved Simulations
8:00 AM–9:57 AM,
Sunday, November 19, 2023
Room: 206
Chair: M. Houssem Kasbaoui, Arizona State University
Abstract: A41.00005 : Resolved CFD-DEM simulation of irregularly shaped cuttings removal in deep hard-rock drilling*
8:52 AM–9:05 AM
Presenter:
Pasha Piroozmand
(Eastern Switzerland University of Applied Sciences)
Authors:
Pasha Piroozmand
(Eastern Switzerland University of Applied Sciences)
Dany Suter
(Eastern Switzerland University of Applied Sciences)
Davood Farshi
(Eastern Switzerland University of Applied Sciences)
In this study, we examine the cutting removal efficiency of PPGD by employing a Computational Fluid Dynamics-Discrete Element Method (CFD-DEM) approach. A highly turbulent flow regime necessitates highly refined grid cells, which are significantly smaller than particle sizes. Therefore, a resolved CFD-DEM approach based on a fictitious domain method is used in the open-source C++ package CFDEM, which integrates the URANS solver in OpenFOAM with the DEM solver in LIGGGHTS. The arbitrary shape of the cuttings is represented using a multi-sphere method. The simulation enables the exploration of critical design considerations, including feasibility assessments, determination of the optimal power required for efficient particle removal under diverse operating conditions, and geometrical modification for improving the removal process.
*Innosuisse is acknowledged for funding the AEGIS-CH project (PFFS-21-48)
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