CFD-DEM Simulation of Reverse Circulation Pneumatic Cuttings Removal during Coal Seam Drilling

<div>System composition of reverse circulation pneumatic cuttings removal. 1-Coal wall; 2-Drilling bit; 3-Discharge hole; 4-Drill pipe; 5-Drilling rig; 6-Cyclone separator; 7-Roots vacuum pump.</div>

Mathematical Problems in Engineering

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Figure 1

Figure 1: CFD-DEM Simulation of Reverse Circulation Pneumatic Cuttings Removal during Coal Seam Drilling 