Analysis shows that the reason of improper flow field distribution caused by DTH bit is that the nozzleposition 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。
2
In this paper, the design points of petroleum chemical equipment such as tower top, side and bottom piping, manholes layout and the nozzleposition are introduced briefly.
本文对石油化工装置设计中塔顶、塔体侧面和塔底管道的设计，人孔布置及管口方位的设计要点做简要介绍。
3
The numerical simulation of the injector of atmospheric gas burner is carried out using software FLUENT, and the relationship between nozzleposition and primary air coefficient is obtained.