Numerical Simulation of 2-D Radiation-Drive Ignition Implosion Process
Numerical Simulation of 2-D Radiation-Drive Ignition Implosion Process
复制标题
二维辐射驱动点火内爆过程的数值模拟
DOI：
10.1088/0253-6102/59/6/15
复制
发表时间：
2013
影响因子：
3.1
通讯作者：
Heng 珩 Yong 勇;P. Song 宋;Chuan-Lei 传磊 Zhai 翟;D. Kang 康;Jian-Fa 建法 Gu 谷;Xu-Deng 旭登 Hang 杭;Pei-Jun 培俊 Gu
中科院分区：
文献类型：
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作者：
Heng 珩 Yong 勇;P. Song 宋;Chuan-Lei 传磊 Zhai 翟;D. Kang 康;Jian-Fa 建法 Gu 谷;Xu-Deng 旭登 Hang 杭;Pei-Jun 培俊 Gu
在基于二维柱坐标系的辐射流体动力学程序LARED中，开发了一种拉格朗日相容的辐射流体动力学算法和核动力学计算模块，用于间接驱动惯性约束聚变的数值模拟。利用改进的LARED积分程序（ILARED）对一维和二维点火内爆进行了数值模拟，结果表明，一维数值模拟结果与一维辐射流体动力学程序RDMG的计算结果一致，而二维低模辐射不对称性和流体动力学不稳定性增长的模拟结果与物理分析和预测的结果一致。利用ILARED软件对SGII实验中的源驱动的胶囊进行了数值模拟，得到的燃料形状与实验结果吻合较好。数值模拟结果表明，ILARED可用于模拟一维和二维的点火舱内爆辐射的多群扩散模型。
A Lagrangian compatible radiation hydrodynamic algorithm and the nuclear dynamics computing module are developed and implemented in the LARED Integration code, which is a radiation hydrodynamic code based on the 2-D cylindrical coordinates for the numerical simulation of the indirect-drive Inertial Confined Fusion. A number of 1-D and 2-D ignition implosion numerical simulations by using the improved LARED Integration code (ILARED) are presented which show that the 1-D numerical results are consistent with those computed by the 1-D radiation hydrodynamic code RDMG, while the simulation results of the 2-D low-mode radiative asymmetry and hydrodynamic instability growth, according to the physical analysis and anticipation, are satisfactory. The capsules driven by the sources from SGII experiments are also simulated by ILARED, and the fuel shapes agree well with the experimental results. The numerical simulations demonstrate that ILARED can be used in the simulation of the 1-D and 2-D ignition capsule implosion using the multi-group diffusion model for radiation.