Experimental and Numerical Analysis of Flow Behavior for Reverse Circulation Drill Bit with Inserted Swirl Vanes

<div>Testing stand of reverse circulation drill bit. 1: air compressor; 2: pressure sensor; 3, 5: air flow meter; 4: outer pipe; 6: data collection system; 7: casing; 8: lower part of the drill bit body; 9: upper part of the drill bit body; 10: swirler; 11: inner pipe; 12: frame.</div>

Geofluids

fig6

Figure 6

Figure 6: Experimental and Numerical Analysis of Flow Behavior for Reverse Circulation Drill Bit with Inserted Swirl Vanes 