Research Article
Experimental and Numerical Analysis of Flow Behavior for Reverse Circulation Drill Bit with Inserted Swirl Vanes
Figure 14
Relationship between area ratio and entrainment performance of drill bit with flushing nozzles: (a) static pressure; (b) air mass flow rate and ; (c) maximum velocity; (d) entrainment performance.
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(b) |
(c) |
(d) |