When the inclination angle of a side nozzle is 0, 30,45 and 60 degrees, the eddying flow of the bottom hole vortex device will cause rotation at the bottom hole, affecting on the jet from bit nozzles.
侧喷嘴倾斜角度在0度、30度、45度和60度情况下，由于井底涡旋器的旋流作用，导致井底产生旋转，对钻头喷嘴射流产生了影响，以致在45度时出现压力损失最小的情况；
Based on this image, I am going to estimate each nozzle to have a radius of about 0.6 meters (although I think that estimate is a bit large).
根据这张图，我估计每个喷嘴的半径约0.6公尺(虽然我认为估计值稍微大了点)。
The influence of bit cutting teeth and its jet nozzle on the flow field is taken into account in the simulation.
模拟中考虑了钻头的切削齿和射流喷嘴对流场的影响。
Field tests also show that the self-resonating cavitation nozzle is highly effective in reducing bit wear, increasing drilling footage and drilling speed.
现场试验同样证实设计的自振空化射流喷嘴在保护钻头、减少钻头磨损及增加进尺、提高机械钻速方面有显著作用。
Analysis shows that the reason of improper flow field distribution caused by DTH bit is that the nozzle position is close to the edge of bit.
分析认为，该潜孔钻头导致井底流场分布不合理的原因在于喷嘴安放位置太靠近钻头边缘。
The self-feeding bit consists of the rotary nozzle, the cutting conformity device and the power supply device etc.
自进式钻头由旋转喷嘴、钻屑整合装置、推力提供装置等组成。
The overflow tank level and the speed of both the role of Chip can be changed by changing the factors such as the nozzle inlet pressure, drill gage width, nozzle diameter of the PDC bit.
改变喷嘴入口压力、钻头保径宽度、喷嘴直径等影响因素对改变井底漫流层和排屑槽内的速度都有作用；
Simulation test shows that, (1) fixing ultra-high pressure nozzle on the bit edge is helpful to penetration with PDC cutting teeth;
室内模拟试验表明（1）超高压喷嘴安装在钻头刀翼上能辅助PDC切削齿破岩；
The designers will be able to adjust the space position of the nozzle-axes on the bit cone according to the calculated result.
设计人员可根据计算结果来调整和确定喷咀轴线的空间位置。
The designers will be able to adjust the space position of the nozzle-axes on the bit cone according to the calculated result.
设计人员可根据计算结果来调整和确定喷咀轴线的空间位置。
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