ICF内爆靶丸能流分布三维数值仿真  

3D numerical simulation of flux distribution on implosion capsule in inertial confinement fusion

作　　者：黄运保[1] 赵权[1] 

机构地区：[1]华中科技大学国家CAD支撑软件工程技术研究中心,武汉430074

出　　处：《强激光与粒子束》2013年第8期2011-2016,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(51175198;61173115);广东教育部产学研结合项目(2011A090200059)

摘　　要：针对惯性约束聚变(ICF)两区均匀模型中靶丸表面能流分布问题,采用三维离散视角因子方法进行模拟仿真。对辐照过程中出现腔壁自身遮挡的面元,利用四叉树结构进行快速剔除;实现了GPU上的靶丸能流分布的并行计算。基于该方法开发的三维仿真软件IRAD3D 1.0,其有效性通过与解析解的对比得到了验证。不同算例模型的仿真结果表明了软件具有通用性、高效性,给出了靶丸均匀性分析的应用实例。The numerical simulation is one of the important methods of studying physical process. In this paper, a 3D dis crete view factor method is proposed for the equivalent model of two-region uniformly in inertial confinement fusion （ICF）. The blocked elements are culled by quadtree data structure when the inner wall of a hohlraum is self-occlusion in irradiation process. The parallelism is analyzed on discrete view factor and then the parallel computation of fluence distribution on target is realized on GPU. The algorithm has been realized in simulation software IRAD3D1.0, and the correctness is verified by comparing with ana lytical solution. Different simulation results show that the software is versatile and efficient. Finally, the practical application on influencing factors of symmetry distribution is given.

关 键 词：惯性约束聚变 两区均匀模型 视角因子 能流分布 遮挡剔除 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]