摘要
采用有限元模拟技术研究了多种等离子枪体内部的水流场和气流场。分析了等离子枪体的机构对水流速的影响以及对紊流形成的影响。并在此基础上,分析了在不同流场分布状态的条件下,等离子枪体内部的温度场形态。通过验算枪体关键部位的温升,发现在不改变冷却水流量的情况下,仅通过改变水道结构和入水方向,就可以使枪体的冷却效果得到明显的改善。该研究结果为等离子枪体的设计和结构优化提供了重要的参考数据。
The fluid field and temperature field in plasma torch were simulated by using the finite element analysis. The influence of the torch structure on the velocity of water flow and the turbulence formation was analyzed. On the basis of the analyzed results the temperature field under different fluid field conditions were calculated. By checking computations of the temperature rise at some key location in the torch, it has been found that the cooling effect of the plasma torch can be obviously improved by changing the water flowing route and water entering direction, and which need not increase the flow volume of the cooling water. The calculated data provided a foundation for the torch design and improvement.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2005年第9期77-80,共4页
Transactions of The China Welding Institution
关键词
等离子枪
流场
温度场
模拟计算
Computer simulation
Cooling water
Finite element method
Flow of fluids
Flow of water
Plasma applications
Structural design
Temperature distribution
