瞬态压力驱动金属熔体流动的数值基准
Numerical benchmark of transient pressure-driven metallic melt flows
摘要：
采用流体动力学方法模拟了高等离子体热流密度和压力梯度下阴极铜表面的熔化和熔坑形成过程。预测的自由表面的变形和金属内部的温度演变的基准对先前发表的模拟。尽管物理模型完全是流体动力学的，忽略了各种等离子体表面相互作用过程，结果也被证明是非常一致的预测更先进的模型，以及实验数据。这为今后类似模型应用于研究金属等离子体破裂后的瞬态表面熔化和液滴喷射提供了良好的基础。
英文摘要：
Fluid dynamics simulations of melting and crater formation at the surface of a copper cathode exposed to high plasma heat fluxes and pressure gradients are presented. The predicted deformations of the free surface and the temperature evolution inside the metal are benchmarked against previously published simulations. Despite the physical model being entirely hydrodynamic and ignoring a variety of plasma-surface interaction processes, the results are also shown to be remarkably consistent with the predictions of more advanced models, as well as experimental data. This provides a sound basis for future applications of similar models to studies of transient surface melting and droplet ejection from metallic plasma-facing components after disruptions.
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