摘要
对氩气-氢气等离子体射流采用基于流体动力学的基本方程进行数值模拟,探讨不同氢气含量对氩气-氢气等离子体射流的温度场与密度的影响,研究了氩气-氢气等离子体射流的特点并分析了氩气-氢气等离子体射流温度场变化的原因。结果表明:氢气含量的增加提高了等离子体射流的温度,降低了等离子体射流的密度;氩气-氢气等离子体射流在喷枪出口位置发生了流体的卷吸作用和射流的压缩效应;氩气-氢气等离子体射流主要以热扩散的形式进行扩散。
The temperature filed and flow field of the Ar-H2 plasma spraying jetwas mathematically formulated with k-ε turbulent fluid model,theoretically analyzed in fluid dynamics and numerically simulated with ANSYS software. The influence of the H2-content on the temperature field and density of Ar-H2 plasma jet was investigated. The simulated results show that addition of H2 significantly increased the temperature and decreased the density of the plasma jet; and that the fluid entrainment and jet compression occurred at the nozzle of the Ar-H2 plasma spraying jet. In addition,thermal diffusion was found to be mainly responsible for the spreading of the argon-hydrogen plasma spraying jet.
出处
《真空科学与技术学报》
CSCD
北大核心
2017年第12期1183-1189,共7页
Chinese Journal of Vacuum Science and Technology
基金
国家自然科学基金项目(51301192)
研究生创新项目(16KY0511)
作者简介
联系人：Tel：（021）67791474；E-mail：yuanjh@sues．edu．cn
