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基于小电流的大气压微束等离子弧数值模拟与验证
Numerical Simulation and Verification Of Low-Current Atmospheric Micro-beamed Plasma Jet
【Author】 Zhang Qi;Zheng Zhi-zhen;Li Jian-jun;Huazhong University of Science and Technology;
【机构】 华中科技大学;
【摘要】 微束等离子弧具有弧柱温度高、稳定性好、热量集中、热能密度大,弧柱细长且挺直度好等特点,将其应用于模具表面改性将有很大的应用潜力。本文结合真实环境下的实验参数,采用商业仿真软件COMSOL对100mA小电流微束等离子弧进行数值模拟,通过施加边界条件,求解流动场、电磁场、传热场及其相互耦合下作用的控制方程组,获得微束等离子弧的温度场,速度场及电磁力的分布信息。使用光谱仪采集微束等离子弧的轴向光谱信息,通过Boltzmann作图法将光谱信息转化为温度场信息,与仿真结果进行比对,验证了模型的正确性。
【Abstract】 Micro-beamed plasma has good characteristics such as high beam temperature, good stability, concentrated heat flux, large heat density, long and thin outline with straight degree. So it has a bright future to be applied in surface modifacation of die steel. This paper combined with real experimental parameters and simulated the model under current of 100 mA with C O M S O L. Through solving flow field equation, heat transferred equation, electromagnetic equation and other boundary equations, the temperature field and velocity distribution of micro-beamed plasma were obtained. Axial spectrum information was collected by a spectrometer and turned into temperature field information through Boltzmann plot method. Experimental and simulation results were compared to verify the correctness of the numerical model.
【Key words】 micro-beamed plasma; numerical simulation; COMSOL; Boltzmann plot method;
- 【会议录名称】 创新塑性加工技术,推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会学术会议论文集
- 【会议名称】创新塑性加工技术,推动智能制造发展——第十五届全国塑性工程学会年会暨第七届全球华人塑性加工技术交流会
- 【会议时间】2017-10-13
- 【会议地点】中国山东济南
- 【分类号】TG456.2
- 【主办单位】中国机械工程学会塑性工程分会