| 直流TIG焊接电弧阳极电流密度的数值计算 |
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| 引用本文： | 范红刚,杨军.直流TIG焊接电弧阳极电流密度的数值计算[J].西安交通大学学报,1997,31(4):77-82,92. |
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| 作者姓名： | 范红刚 杨军 |
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| 作者单位： | 西安交通大学 |
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| 摘 要： | 以直流钨极氩弧焊电弧为研究对象，建立了轴对称两维数值模型。模型中考虑了阴极几何形状，电流密度计算包括了阴极区和弧柱区。模型对一组磁流体动力学方程组的求解，采用了ＳＩＭＰＬＥ算法，所得的电弧弧柱温度分布与实验吻合良好。在此基础上，运用所建立的电弧模型，详细分析了焊接电流、钨极端头锥角及弧长对电弧阳极电流密度分布的影响，计算结果与实测值基本一致。
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| 关 键 词： | 钨极氩弧焊 电弧 阳极 电流密度 数值计算 |
Numerical Computation on Anode Current Density Distribution of Direct Current Tungsten Inert Gas Welding Arc |
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| Fan,Honggang,Yang,Jun,Shi,Yaowu,Lei,Yongping.Numerical Computation on Anode Current Density Distribution of Direct Current Tungsten Inert Gas Welding Arc[J].Journal of Xi'an Jiaotong University,1997,31(4):77-82,92. |
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| Authors: | Fan Honggang Yang Jun Shi Yaowu Lei Yongping |
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| Abstract: | A two dimensional axisymmetric numerical model is developed to describe heat transfer and fluid flow in inert gas tungsten welding arc. The electrode tip geometry is considered in the model, and the cathode and arc column regions are included in solution of the current continuity equation. Magneto hydro dynamics equations are solved using the SIMPLE algorithm. Prediction of arc column temperatures is in fair agreement with the experiment results. Moreover, the effects of current, electrode tip angle and arc length on the anode current density distribution are analysed in detail using the proposed arc model, and the results agree well with the experimental data. |
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| Keywords: | inert gas tungsten arc welding welding arc numerical model magneto hydro dynamics |
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