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

<div>Relationship between helical angle and entrainment performance of drill bit without flushing nozzles: (a) entrainment performance; (b) static pressure.</div>

Geofluids

fig8

Figure 8

Figure 8: Experimental and Numerical Analysis of Flow Behavior for Reverse Circulation Drill Bit with Inserted Swirl Vanes 