国防科技大学学报2017，Vol.39Issue(2)：171-177,7.DOI:10.11887/j.cn.201702026
烧蚀材料对辐射烧蚀驱动的Richtmyer-Meshkov不稳定性影响
Radiation-driven Richtmyer-Meshkov instability with different material ablators
摘要
Abstract
Fluid interface instability seriously affects the performance of ICF (inertial confinement fusion) capsule implosion, doped CH plastic or Be (Beryllium) ablator is generally employed in ICF capsule.The RM(Richtmyer-Meshkov) instability occurs when the radiation-generated shock penetrates the rippled inner surface of ablator.In order to explore the resistance ability to RM instability with Be or CH plastic as ablator, theoretical analysis and numerical simulation were carried on the evolution of RM instability.Theoretical analysis indicates that the linear growth rate of RM instability depends on the radiation temperature, the wavelength,the initial amplitude of perturbation and the density of ablator.The hydrodynamics process of high temperature (above 100 eV) blackbody spectrum X-ray ablating rippled interface of Be/Foam and CH/Foam target is simulated by a radiation hydrodynamic code.Simulation results show that the Be ablator with higher density has stronger resistance ability to RM instability than CH plastic ablator.The results are useful for capsule design in inertial confinement fusion.关键词
Richtmyer-Meshkov不稳定性/辐射流体力学/界面扰动/烧蚀冲击波Key words
Richtmyer-Meshkov instability/radiation hydrodynamic/interface perturbation/ablation shock wave分类
数理科学引用本文复制引用
徐彬彬,汤文辉,马燕云,杨晓虎,葛哲屹,赵媛..烧蚀材料对辐射烧蚀驱动的Richtmyer-Meshkov不稳定性影响[J].国防科技大学学报,2017,39(2):171-177,7.基金项目
国家自然科学基金资助项目(11305264,11175253) （11305264,11175253）
