Simulation and analysis of flow field in abrasive water jet nozzle

2011 ◽  
Author(s):  
Lei Yuyong ◽  
Wang Rongjuan ◽  
Jiang Daijun ◽  
Liu Kefu ◽  
Tang Puhua
Keyword(s):  
Flow Field ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Jet Nozzle

scholarly journals Optimization of Abrasive Water Jet Nozzle Based on Numerical Simulation

2021 ◽  
Vol 1985 (1) ◽  
pp. 012014
Author(s):  
Jiangsheng Deng ◽  
Yuefeng Yuan ◽  
Deran Li ◽  
Hai Cheng ◽  
Cheng Dai ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Water Jet ◽  
Abrasive Water Jet ◽  
Jet Nozzle

scholarly journals Numerical Simulation and Experimental Study on Flow of Polymer Aqueous Solution in Porous Jet Nozzle

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Minghui Wei ◽  
Chenghuai Wu ◽  
Yanxi Zhou
Keyword(s):  
Numerical Simulation ◽  
Flow Field ◽  
Pure Water ◽  
Jet Flow ◽  
Rock Breaking ◽  
Water Jet ◽  
Drilling Process ◽  
Polymer Additive ◽  
Convergent Nozzle ◽  
Jet Nozzle

The addition of a polymer to the jet medium enhances its ability to break rock, and the structure of the nozzle plays a vital role in the full utilization of energy. In this paper, a self-propelled porous jet bit with a support plate is designed, which can prevent the drill bit from jamming due to the jet nozzle against the bottom of the well during the drilling process. And the structural design of the cone-converging nozzle is applied to the forward center nozzle. The polymer additive jet flow field and the pure water jet flow field were compared by numerical simulation and experimental investigation. The results show that the polymer additive jet has a longer isokinetic core, and the rock-breaking volume of the polymer additive jet is much larger than that of the pure water jet, and the optimal spray distance is increased. The forward central jet with the conical convergent nozzle structure has more efficient rock-breaking ability.

Simulation of Velocity Field of Two-Phase Flow for Gas and Liquid in the Abrasive Water Jet Nozzle

2006 ◽  
Vol 315-316 ◽  
pp. 150-153 ◽  
Author(s):  
Rong Guo Hou ◽  
Chuan Zhen Huang ◽  
Jun Wang ◽  
Yan Xia Feng ◽  
Hong Tao Zhu
Keyword(s):  
Velocity Field ◽  
Cone Angle ◽  
Water Jet ◽  
Phase Flow ◽  
Abrasive Water Jet ◽  
Complex Velocity ◽  
Two Phase ◽  
Jet Nozzle ◽  
Cone Surface ◽  
Gas Liquid Flow

Simulation on velocity field of gas-liquid flow in the abrasive water jet nozzle was studied by the computed fluid dynamics (CFD) software, The complex velocity field of the flow in the abrasive water jet nozzle can be obtained by means of simulation. The study on the effect of the nozzle inner cone angle on the velocity field shows that the cone angle affects the whirlpool’s intension and position of the whirlpool in the nozzle of abrasive water jet (AWJ), and it also affects velocity ‘s magnitude and distribution of the velocity on the cone surface.

Simulation of the Gas-Liquid-Solid Three-Phase Flow Velocity Field Outside the Abrasive Water Jet(AWJ) Rectangle Nozzle and Ellipse Nozzle

2007 ◽  
Vol 359-360 ◽  
pp. 470-473
Author(s):  
Rong Guo Hou ◽  
Chuan Zhen Huang ◽  
Li Li ◽  
Zong Wei Niu ◽  
Zhi Yong Li
Keyword(s):  
Velocity Field ◽  
Flow Field ◽  
Fluid Dynamic ◽  
Water Jet ◽  
Phase Flow ◽  
Abrasive Water Jet ◽  
Flow Velocity Field ◽  
Three Phase ◽  
Three Phase Flow ◽  
Dynamic Software

Simulation of the flow field of the gas-liquid-solid three-phase flow outside the abrasive water jet rectangle nozzle and ellipse nozzle is studied by the computed fluid dynamic software-fluent, and the velocity field of the three-phase flow is obtained. The simulation result expresses that the flow is expanded when it is out of the nozzle; the velocity of the flow is the highest at the axis, which comes down by its side, the velocity of the flow is high at the beginning then it is decreased because the flow is resisted by the air; the shape of the jet at the start is closed to the geometry of the nozzle, then it is rounded in the external area; the velocity field outside the ellipse nozzle is distributed evenly around the center. By plotting the velocity field of the rectangle nozzle and the ellipse nozzle in the Y-Z section, it is expressed that the changing range of velocity is enlarged with the increasing of distance offset the nozzle.

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