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首页> 外文期刊>Key Engineering Materials >Flow Field Analysis of Gas Jets from Nozzles For Gas-assisted Laser Cutting
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Flow Field Analysis of Gas Jets from Nozzles For Gas-assisted Laser Cutting

机译：喷嘴在气体辅助激光切割中的射流流场分析

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摘要

The gas jets from the conical and new designed supersonic nozzles on different working pressure are simulated by a computational fluid dynamics code, FLUENT, using standard k-ε model and unstructured grid finite volume method with compressible axis-symmetry N-S equation. Under the same condition of pressure-inlet, the distribution of symmetry velocity and that of static pressure are compared. The result of the analysis indicates that conical nozzle outlet can reach subsonic or sonic flow. It is fit for low speed and low pressure situation. The gas jet from the new design supersonic nozzle working at design work pressure has better properties than those of other nozzles. So it is better for thick-plate and or high-speed laser cutting. It is obvious that the results of CFD numerical analysis are consistent with the shadowgraph. Thereby it is an effective way to optimize the nozzle according to the performance of flow field.
机译：使用标准k-ε模型和带有可压缩轴对称N-S方程的非结构网格有限体积方法，通过计算流体动力学代码FLUENT模拟圆锥形和新设计的超音速喷嘴在不同工作压力下的气体射流。在相同的压力入口条件下，比较了对称速度和静压力的分布。分析结果表明锥形喷嘴出口可以达到亚音速或音速流。它适用于低速和低压情况。新设计的超音速喷嘴在设计工作压力下产生的气体射流具有比其他喷嘴更好的性能。因此，它更适合厚板和/或高速激光切割。显然，CFD数值分析的结果与阴影图一致。因此，这是一种根据流场性能优化喷嘴的有效方法。

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  • 来源
    《Key Engineering Materials》 |2010年第2010期|409-412|共4页
  • 作者

    Yuan Run; Yang Bo; Ruan Hong-yan; Wang Xiao;

  • 作者单位

    School of Mechanical Engineering, Jiangsu University, Zhenjiang Jiangsu, 212013, China;

    School of Mechanical Engineering, Jiangsu University, Zhenjiang Jiangsu, 212013, China;

    School of Mechanical Engineering, Jiangsu University, Zhenjiang Jiangsu, 212013, China;

    School of Mechanical Engineering, Jiangsu University, Zhenjiang Jiangsu, 212013, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser cutting; nozzle; gas jet; flow field; CFD;

    机译：激光切割喷嘴;气体喷射流场差价合约;

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