CFD simulation of diamond bit's bottomhole flow field

PAN Xiaoyi; QIN Jianxin; XIE Delong; LIN Feng; LUO Wenlai; XIAO Leyin; CHEN Chao; PENG Shaobo; CHEN Jiarong

doi:10.13394/j.cnki.jgszz.2016.4.0007

Volume 36 Issue 4

Aug. 2016

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Article Navigation > Diamond & Abrasives Engineering > 2016 > 36(4): 34-38

PAN Xiaoyi, QIN Jianxin, XIE Delong, LIN Feng, LUO Wenlai, XIAO Leyin, CHEN Chao, PENG Shaobo, CHEN Jiarong. CFD simulation of diamond bit's bottomhole flow field[J]. Diamond & Abrasives Engineering, 2016, 36(4): 34-38. doi: 10.13394/j.cnki.jgszz.2016.4.0007

Citation:

PAN Xiaoyi, QIN Jianxin, XIE Delong, LIN Feng, LUO Wenlai, XIAO Leyin, CHEN Chao, PENG Shaobo, CHEN Jiarong. CFD simulation of diamond bit's bottomhole flow field[J]. Diamond & Abrasives Engineering, 2016, 36(4): 34-38. doi: 10.13394/j.cnki.jgszz.2016.4.0007

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CFD simulation of diamond bit's bottomhole flow field

doi: 10.13394/j.cnki.jgszz.2016.4.0007

PAN Xiaoyi^1,2,3,
QIN Jianxin^{1,2,3
,
,},
XIE Delong^1,2,3,
LIN Feng^1,2,3,
LUO Wenlai^1,2,
XIAO Leyin^1,2,3,
CHEN Chao^1,2,3,
PENG Shaobo^1,2,3,
CHEN Jiarong^1,2,3

1. China Nonferrous Metal(Guilin) Geology and Mining Co., Ltd, Guilin 541004, China;
2. Guangxi Key Laboratory of Superhard Material, Guilin 541004, China;
3. National Engineering Research Center for Special Mineral Material, Guilin 541004, China

More Information

Rev Recd Date: 2016-06-11

Available Online: 2022-07-27

Abstract

Abstract

Based on the theory of computational fluid dynamics(CFD),the bottomhole flow field of the ϕ75/ϕ49 mm diamond bits is simulated using the RNG k-ε model.Meanwhile,the effects of bottomhole pressure,flow velocity,shear strain and the eddy of water gap on the crown surface are analyzed.The diamond arrangement is optimized in the insufficient cooling location and serious erosion area.The simulation results show that the pressure distribution gradient on the ϕ75/ϕ49 mm diamond bit's crown surface declines from the inner edge to the outside edge.Because of the eddies in the water gap,the medium flow nephogram and the shear force vector nephogram show a distorted convex form.
- diamond bit,
- bottomhole flow field,
- hydromechanics,
- computational fluid dynamics,
- numerical simulation