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The modeling of delayed-onset Rayleigh-Taylor and transition to mixing in laser-driven HED experiments

机译:延迟展示瑞利泰勒的建模与激光驱动铰接实验中混合的转变

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摘要

In this work, we discuss simulations, along with a benchmarking experiment, performed using the xRAGE code which demonstrate the ability of a laser model to predict laser-driven, high-energy-density shock hydrodynamics with good fidelity. This directly contributes to our ability to model hydrodynamic-instability dynamics produced by a laser drive typical of those available at OMEGA, OMEGA-EP, NIF, and similar facilities. In particular, we show how the laser model is essential for predicting deceleration-phase Rayleigh-Taylor arising from laser turn-off. We do this using the experimental case of a seeded single-mode perturbation. Then, we turn to a seeded multimode perturbation to show how the above result permits us to access the modeling of hydrodynamic mixing, a topic of interest for future work. Published under license by AIP Publishing.
机译:在这项工作中,我们讨论模拟,以及使用XRAGE代码进行的基准测试,其演示激光模型预测激光驱动,高能量密度的缓冲流体动力学具有良好保真度的能力。 这直接有助于我们模拟由欧米茄,Omega-EP,NIF和类似设施的典型激光驱动产生的激光驱动产生的流体动力学 - 不稳定动态。 特别地,我们展示了激光模型是如何预测从激光关断引起的减速相位瑞利泰勒的必要条件。 我们使用播种单模扰动的实验情况进行这一点。 然后,我们转向种子多模扰动,以展示上述结果如何允许我们访问流体动力混合的建模,这是未来工作的兴趣主题。 通过AIP发布在许可证下发布。

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