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首页> 外文期刊>Bulletin of the American Physical Society >APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Experiments of the highly non-linear Rayleigh-Taylor instability regime and dependence on Atwood Number
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APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Experiments of the highly non-linear Rayleigh-Taylor instability regime and dependence on Atwood Number

机译：APS-等离子体物理APS部门第59届年会-事件-高度非线性Rayleigh-Taylor失稳状态和对Atwood数的依赖性的实验

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摘要

Potential flow models predict that a Rayleigh-Taylor unstable system will reach a terminal velocity (and constant Froude number) at low Atwood numbers. Numerical simulations predict a re-acceleration phase of Rayleigh-Taylor Instability (RTI) and higher Froude number at late times. To observe this effect, we are conducting a series of experiments at OMEGA 60 to measure single-mode RTI growth at low and high Atwood numbers and late times. X-ray radiographs spanning 40$+$ ns capture the evolution of these systems. Experimental design challenges and initial results are discussed here.This work is funded by the Lawrence Livermore National Laboratory under subcontract B614207, and was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract No. DE-AC52-07NA27344.
机译：潜在流动模型预测，在低阿特伍德数下，瑞利-泰勒不稳定系统将达到最终速度（和恒定的弗洛德数）。数值模拟预测了瑞利泰勒不稳定性（RTI）的重新加速阶段和后期的更高弗洛德数。为了观察这种效果，我们在OMEGA 60上进行了一系列实验，以测量低和高Atwood数以及较晚时间的单模RTI生长。跨越40 ns + ns的X射线射线照相可以捕捉到这些系统的演变。实验设计挑战和初步结果将在此处讨论。这项工作由劳伦斯·利弗莫尔国家实验室根据分包合同B614207资助，在美国能源部的主持下由劳伦斯·利弗莫尔国家实验室根据合同号DE-AC52-07NA27344进行。 。

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