摘要
当强冲击波从金属自由面反射时通常会发生微喷射现象,气体环境下,喷射颗粒将与气体相互作用而形成物质混合.微喷射与混合是战略武器研究中的关键和难点问题,亦是冲击压缩科学与工程领域研究的前沿和热点问题之一.作者与合作者长期从事金属微喷射与混合问题理论和数值模拟研究,取得了一系列研究进展.本篇评述简要介绍我们围绕微喷射物理机制与影响因素、理论建模以及气粒混合问题开展的数值模拟和理论研究工作,以及取得的研究成果.主要包括以下几个方面:(1)微射流喷射数值模拟与理论建模;(2)微层裂破碎数值模拟与机理分析;(3)微喷混合数值模拟与动力学规律.
When a strong shock wave releases from material surface, material ejection usually takes place where a great amount of high-speed particles can be ejected from the material surface. This phenomenon is called micro-ejection and the ejected particles is named as ejecta. In gas environment, the interaction between ejecta and gas can lead to the formation of a layer of gas-ejecta mixture and this process is called mixing. Micro-ejection and mixing are of great importance in many fields such as inertial confinement fusion and implosive dynamics, and have attracted intense research activities both experimentally and theoretically in the past several decades. The author and collaborators have been studying the micro- ejection and mixing phenomena for years, and some valuable achievements have been obtained. In the present review, we introduce some of our theoretical works on the two main mechanisms of micro-ejection （i.e., micro-jetting and micro- spallation） as well as the gas-ejecta mixing process, including mechanisms of micro-jetting and micro-spallation and their dominant factors, modeling of micro-jetting based on the Richtmyer-Meshkov theory in elastic-plastic solids, and some dynamic characteristics of mixing.
作者
王裴
何安民
邵建立
孙海权
陈大伟
刘文斌
刘军
WANG Pei;HE AnMin;SHAO JianLi;SUN HaiQuan;CHEN DaWei;LIU WenBin;LIU Jun(Institute of Applied Physics and Computational Mathematics,Beijing 100094,China;Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China 3 Graduate School of China Academy of Engineering Physics,Beijing 100088,China)
出处
《中国科学：物理学、力学、天文学》
CSCD
北大核心
2018年第9期100-110,共11页
Scientia Sinica Physica,Mechanica & Astronomica
基金
国家自然科学基金(编号：U1530216)和科学挑战专题(编号：TZ2016001)资助项目
关键词
微喷射
混合
微射流
微层裂
micro-ejection
mixing
micro-jetting
micro-spallation
