CAJ | 학술논문

火箭探空实验观测结果显示,极区夏季中层顶尘埃等离子体分层中存在着稳定的锐边界结构.本文采用了流体力学方程组和尘埃粒子自洽电荷变化模型,从尘埃等离子体电动力学的角度出发,利用数值模拟研究了尘埃分层结构中尖锐边界形成的物理过程.物理分析和数值模拟结果表明,中层顶区域存在的带电冰晶粒子在等离子体及电磁力等相互作用下,很容易形成一种在时间和空间上存在长时间,稳定的局域结构,这个结构可以用来解释我们观测到的一些实验现象.
화전탐공실험관측결과현시,겁구하계중층정진애등리자체분층중존재착은정적예변계결구.본문채용료류체역학방정조화진애입자자흡전하변화모형,종진애등리자체전동역학적각도출발,이용수치모의연구료진애분층결구중첨예변계형성적물리과정.물리분석화수치모의결과표명,중층정구역존재적대전빙정입자재등리자체급전자력등상호작용하,흔용역형성일충재시간화공간상존재장시간,은정적국역결구,저개결구가이용래해석아문관측도적일사실험현상.
The rocket experimental data indicated that the layered dusty plasma structure has a sharp boundary in the summer polar mesopause. In order to combine with the experimental results, in this paper, tradition hydrodynamic equations and charging equation is adopted to build physical models of the dusty plasma to study the physics process about the sharp boundary in the stratified structure. The theoretical analysis and numerical result is shown that charged dust cloud immersed in a plasma under the action of electric field and other force, could develop a longtime and steady structures, which is can be used to explain the experimental phenomena.