Verification and Validation of Two Hydrodynamic Methods for Simulations of High Energy Density Physics Problems

IF 1.1 4区物理与天体物理 Q4 PHYSICS, APPLIED

Laser and Particle Beams Pub Date : 2022-10-11 DOI:10.1155/2022/8720064

V. Chiravalle

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引用次数: 1

Abstract

A 3D verification and validation suite of test problems is presented and used to evaluate hydrodynamic methods within a radiation hydrodynamics code, xRAGE. These test problems exercise different levels of complexity, building towards ICF problems which in addition to hydrodynamics also include three temperature plasma physics, thermal conduction, and radiation diffusion. Among the problems in the test suite are the Kidder ball problem, the Verney shell problem, and a 5-material compression problem, which exercise different purely hydrodynamic methods implemented within xRAGE. There is excellent agreement between 2D and 3D XRAGE simulation results and between the xRAGE results and the benchmark solutions. Two 3D ICF test problems are also presented, based on an OMEGA direct drive capsule experiment and on a NIF indirect drive capsule experiment. It is demonstrated that the newer unsplit hydrodynamic method in xRAGE produces more vorticity relative to the older default method. For the indirect drive capsule, the 3D simulations are in reasonable agreement with the experimental values of ion temperature and neutron production.

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两种水动力方法在高能量密度物理问题模拟中的验证与验证

提出了一套三维验证和验证测试问题，并用于评估辐射流体动力学代码xRAGE中的流体动力学方法。这些测试问题具有不同程度的复杂性，构建ICF问题，除了流体动力学之外，还包括三温度等离子体物理，热传导和辐射扩散。测试套件中的问题包括Kidder球问题、Verney壳问题和5-材料压缩问题，这些问题在xRAGE中实现了不同的纯流体动力学方法。在2D和3D XRAGE模拟结果之间，以及XRAGE结果和基准解决方案之间，都有很好的一致性。给出了基于OMEGA直接驱动胶囊实验和NIF间接驱动胶囊实验的两个三维ICF测试问题。结果表明，在xRAGE中，新的不分裂流体动力方法相对于旧的默认方法产生了更大的涡量。对于间接驱动胶囊，三维模拟结果与离子温度和中子产量的实验值吻合较好。

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来源期刊

Laser and Particle Beams PHYSICS, APPLIED-

CiteScore

1.90

自引率

11.10%

发文量

审稿时长

1 months

期刊介绍： Laser and Particle Beams is an international journal which deals with basic physics issues of intense laser and particle beams, and the interaction of these beams with matter. Research on pulse power technology associated with beam generation is also of strong interest. Subjects covered include the physics of high energy densities; non-LTE phenomena; hot dense matter and related atomic, plasma and hydrodynamic physics and astrophysics; intense sources of coherent radiation; high current particle accelerators; beam-wave interaction; and pulsed power technology.