| 数值模拟辐射驱动2维内爆压缩过程 |
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| 引用本文： | 勇珩,高耀明,齐进,裴文兵,翟传磊.数值模拟辐射驱动2维内爆压缩过程[J].强激光与粒子束,2010,22(10). |
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| 作者姓名： | 勇珩 高耀明 齐进 裴文兵 翟传磊 |
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| 作者单位： | 北京应用物理与计算数学研究所, 北京 100094 |
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| 基金项目： | 国家自然科学基金，中国工程物理研究院科学技术发展基金，国家高技术发展计划项目 |
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| 摘 要： | 采用2维三温非平衡辐射流体力学程序LARED-H数值模拟辐射驱动内爆过程。针对2维三温能量方程九点差分格式离散后的线性方程组,采用了高效的Krysolv子空间迭代解法,改进了代数解法器。将1维间接驱动内爆总体程序CFJ与LARED-H程序的计算结果进行比对,验证了LARED-H程序数值模拟1维内爆问题的正确性。并数值模拟了不同腔长辐射温度源驱动下的2维靶球运动,数值结果显示:随着腔长的增加,高压缩内爆燃料区分别被压缩成香肠形、球形和铁饼形,数值模拟结果与神光Ⅱ的实验结果定性上相同。
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| 关 键 词： | LARED-H程序 辐射驱动 高压缩内爆 Krysolv子空间迭代 |
| 收稿时间： | 1900-01-01; |
Numerical simulation of 2D radiation-driven implosion process |
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| Yong Heng,Gao Yaoming,Qi Jin,Pei Wenbing,Zhai Chuanlei.Numerical simulation of 2D radiation-driven implosion process[J].High Power Laser and Particle Beams,2010,22(10). |
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| Authors: | Yong Heng Gao Yaoming Qi Jin Pei Wenbing Zhai Chuanlei |
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| Institution: | Institute of Applied Physics and Computational Mathematics, Beijing 100088, China |
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| Abstract: | The two-dimensional(2D) three-temperature radiation hydrodynamics code, LARED-H(laser radiation electron dynamic hohlraum), is improved to simulate the 2D radiation-driven implosion process. In order to solve the linear-algebraic equations discretized from the two-dimensional and three-temperature energy equations by a nine point scheme, the efficient solver of Krylov method is used for improving the iterative capability. The numerical result comparison with 1D CFJ code shows the accuracy of the LARED-H code. Finally, the compressed shapes of the capsule driven by a radiation field in cylindrical gold hohlraums with different length are simulated by the LARED-H code. The shape of the fuel becomes sausage-like, ball-like or cake-like, respectively with the different hohlraum length, which a |
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| Keywords: | radiation driving high-compressibility implosion Krylov iterative method |
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