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以伴随有小孔效应产生的高能量密度束焊接过程为研究对象，建立了运动热源作用下二维小孔焊接中流体流动及传热过程的数学模型，提出采用位置预置———修正的方法对焊接熔池的固、液相交界面位置进行准确捕捉，并对这一小孔焊接模式进行了较为全面的参数化分析，揭示了材料热物理性能、小孔直径、焊接速度等因素对焊接热过程的影响．
A mathematical model of fluid flow and heat transfer in two-dimensional small-hole welding under the action of moving heat source is established with the welding process of high energy density beam accompanied by pinhole effect as the research object. The method was used to accurately capture the interface between the solid and liquid phases in the weld pool and to conduct a more comprehensive parametric analysis on the welding mode of the small hole, revealing the influence of thermal physical properties, pore diameter, welding speed and other factors Effect of welding heat process.