This study focuses on a series of CFD (computational fluid dynamics) simulations that enable the optimization of drill bit design by assessing internal rock particle and air flow paths. We used the Star-CCM+ code to simulate the multi-phase flow (i.e., rock particle discharge by flushing air during drilling) with input parameters obtained from the in situ drilling tests. Three design factors were determined, with a Taguchi experimental design method utilized to evaluate optimum values for each factor.
Numerical Analysis of Rock Particle Flow Around a Top-Hammer Drill Bit
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Song, Chang-Heon , Kwon, Ki-Beom , Park, Jin-Yeong , Shin, Dae-Yeong , and Jung-Woo Cho. "Numerical Analysis of Rock Particle Flow Around a Top-Hammer Drill Bit." Paper presented at the ISRM Regional Symposium - 7th Asian Rock Mechanics Symposium, Seoul, Korea, October 2012.
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