变角氧枪气体射流数值模拟

Numerical Simulation of Gas Jet Sprayed from Variable angle Four-hole Oxygen Lance

采用CFD流体模拟软件Fluent6.3,基于压力的分离隐式求解器,运用k-ε双方程模拟了四孔变角氧枪气体射流流场,分析了不同喷孔倾角下气体射流速度和动压分布规律,并确定了适宜的氧枪操作参数。结果表明,与喷孔倾角均为10.5°的喷头A射流相比,喷孔倾角变化1°或0.5°情况下,气体射流流场基本相似;在射流方向上,射流速度分布和动压分布规律基本一致,喷头A的枪位控制在1～1.6 m较为适宜;喷孔倾角变化1°时,喷头B、C、D和E的枪位分别控制在1～1.6 m、1～1.7 m、1～1.8 m和1～1.9 m较为适宜;喷孔倾角变化0.5°时,喷头F、G、H和I的枪位分别控制在1～1.55 m、1～1.6 m、1～1.65 m和1～1.75 m时更适于吹炼操作。

Use the CFD simulation software Fluent6.3 fluid, based on the pressure separation implicit solver, using k-ε both sides to simulate the process four holes Angle changed oxygen lance gas jet flow field, analyzes the orifices under different angle of gas jet speed and dynamic pressure distribution law, and determine the appropriate oxygen lance operation parameters. The results showed that：the nozzle jet and nozzle angle are 10.5 °compared to changes in the nozzle angle of 1 °or 0.5 °case,the gas jet flow field are similar;In the direction of the jet,the jet velocity distribution and the dynamic pressure distribution law of basic consistent, oxygen lance nozzle A gun control is more appropriate in the 1 - 1.6m ; nozzle inclination change of 1 °, nozzle B, and C and D, and E-gun position control in the 1 - 1.6 m, 1 - 1.7 m, 1 - 1.8 m and 1 - 1.9 m is more appropriate ; nozzle inclination change of 0.5 °, nozzle F, G, H and I of the gun position,respectively,in 1 -1.55 m, 1 - 1.6 m, 1 -1.65 m andl - 1.75m, is more suitable for the blowing operation.