Abstract In this paper, we present an experimental and numerical study of the laser pulse impact on the liquid metal jet target. The jet motion was recorded with the stroboscopic ultrafast shadow photography. Simulations were carried out in a two-step approach. At the first step, we simulated laser interaction with the target using the radiation hydrodynamics code 3DLINE, which accounts for a number of effects: liquid–gas phase transition, dynamics of ionization, radiation transfer, laser reflection, refraction and absorption. However, this code cannot be used on a deeply refined mesh near the liquid surface and does not account for the surface tension, which strongly affects liquid motion on the microsecond timescale after the laser pulse ends. Therefore, for the second step we employed the OpenFOAM solver, based on the volume-of-fluid method, which overcomes these limitations. The simulated target dynamics is found to be in a fairly good agreement with the experiment. Graphic abstract

中文翻译：

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激光脉冲撞击液态金属射流动力学的实验和数值研究

摘要 在本文中，我们对激光脉冲对液态金属射流目标的影响进行了实验和数值研究。射流运动是用频闪超快阴影摄影记录的。模拟分两步进行。第一步，我们使用辐射流体动力学代码 3DLINE 模拟激光与目标的相互作用，该代码解释了许多影响：液-气相变、电离动力学、辐射转移、激光反射、折射和吸收。但是，该代码不能用于靠近液体表面的深度细化网格，并且没有考虑表面张力，这会强烈影响激光脉冲结束后微秒时间尺度上的液体运动。因此，对于第二步，我们采用了基于流体体积法的 OpenFOAM 求解器，克服了这些限制。发现模拟的目标动力学与实验非常吻合。图形摘要