AI 中文总结
本研究提出一种耦合多域框架，推导并实现了二维轴对称直流电弧模型，可模拟电弧的多物理场演化，经验证能复现相关特性，为直流电弧动力学及相关应用的系统级模拟提供基础。
AI 中文摘要
本研究提出了一种耦合多域框架用于模拟直流（DC）电弧，整合了热、流体动力学和电磁现象。我们通过简化磁流体动力学（MHD）方程推导了二维（2D）轴对称模型，并在MATLAB/Simulink中实现该模型。该模型可捕捉壁稳电弧柱内温度、流体速度和磁场的时空演化。对10 A至1500 A电流范围的模拟显示出显著的径向温度梯度，中心轴处达到峰值并向周边快速衰减。该方法的准确性通过将模拟的速度和磁场与已确立的物理范式对齐得到验证；此外，模型还能准确复现经典模型和实证研究中观察到的电流-电压逆特性，瞬态分析则确认了毫秒级的快速电压稳定。这种易于使用的计算模型为研究直流电弧动力学提供了可靠基础，并为高级断路器、焊接技术及等离子体应用的系统级模拟提供便利。
英文摘要
This study introduces a coupled multi-domain framework to simulate direct current (DC) arcs, integrating thermal, fluid dynamic, and electromagnetic phenomena. We derive a two-dimensional (2D) axisymmetric model by simplifying the magneto-hydrodynamics (MHD) equations and implement it in MATLAB/Simulink. The model captures the spatiotemporal evolution of temperature, fluid velocity, and magnetic fields within a wall-stabilized arc column. Simulations across a 10 A to 1500 A current range show a pronounced radial temperature gradient, with central axis peaks and rapid peripheral decay. The approach's accuracy is validated by aligning the simulated velocity and magnetic fields with established physical paradigms. Additionally, the model accurately reproduces the inverse current-voltage characteristics observed in classical models and empirical studies, while transient analyses confirm rapid millisecond-scale voltage stabilization. This accessible computational model provides a robust foundation for investigating DC arc dynamics and facilitates system-level simulations for advanced circuit breakers, welding technologies, and plasma applications.
Journal ref2026 IEEE/IAS 62nd Industrial and Commercial Power Systems Technical Conference (I&CPS)
