Open AccessNumerical Simulation of Temperature Field and Temperature Control of DC Arc Plasma Torch
Author(s) -
Chang Xu,
Zhihao Ye,
Han Xiao,
Le Li,
Jiafan Zhang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2005/1/012134
Subject(s) - torch , plasma torch , arc (geometry) , plasma arc welding , plasma , mechanics , heat transfer , volumetric flow rate , materials science , direct current , chemistry , current (fluid) , analytical chemistry (journal) , thermodynamics , voltage , electrical engineering , mechanical engineering , physics , composite material , engineering , chromatography , quantum mechanics , welding
In order to study and analyze the internal heat transfer process of DC arc plasma torch, a two-dimensional axisymmetric model of DC arc plasma torch was established based on magnetohydrodynamics and heat transfer theory. The finite element analysis software COMSOL was used to simulate the temperature field under different conditions. The results show that when the terminal current is constant, the DC plasma arc voltage and the average temperature of the torch outlet increase with the increase of nitrogen standard flow rate, and the maximum temperature in the plasma torch decreases with the increase of nitrogen standard flow rate. When the standard flow rate of nitrogen is constant, the arc voltage decreases with the increase of arc current, and the average temperature of plasma torch exit and the maximum temperature in the torch increase with the increase of arc current. The analysis of simulation data provides theoretical guidance for the temperature control of experimental DC plasma torch.