Numerical Simulation in Nozzle Outflow of Post-Mixed Water-Jet Peening

Abstract:

In order to achieve movement rule of post-mixed water jet outflow field, post-mixed water jet peening nozzle flow field were simulated by FLUENT software, according to their turbulent characteristics, the mathematical model adopted Euler model, turbulence model adopted the standard k ε model. Analyzed the peening pressure and peening standoff distance on the influence of outflow field of liquid-solid two phases-flow axial dynamic pressure and axial velocity, the results show that in different peening pressure, water flow field and pill flow field of axial velocity and the axial dynamic pressure both are symmetrical distribution, and their value increased with the increase of peening pressure to raise, decreases with the increase of peening standoff distance, even, with the increase of length of pill nozzle water flow field of axial velocity decreases, and pill flow field of axial velocity increases. When the peening pressure is 14 MPa, peening standoff distance is 30 mm, length of pill nozzle is 55 mm, maximum axial dynamic pressure of the outflow field is 3.18 MPa, the maximum axial velocity of water flow field and pill flow field respectively are 71.3 m/s and 69.6 m/s.

• Periodical: Applied Mechanics and Materials (Volumes 448-453)
• Pages: 1173-1178
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.448-453.1173
• Online since: October 2013
• Authors: Xing Dong*, Wei Yang, Hai Lu Zhang
• Keywords: Liquid-Solid Two Phases-Flow, Numerical Simulation, Outflow Field, Post-Mixed Water Jet

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