核聚变与等离子体物理
覈聚變與等離子體物理
핵취변여등리자체물리
NUCLEAR FUSION AND PLASMA PHYSICS
2014年
1期
90-96
,共7页
Mie散射理论%航天器喷焰等离子体%粒子散射%复折射率
Mie散射理論%航天器噴燄等離子體%粒子散射%複摺射率
Mie산사이론%항천기분염등리자체%입자산사%복절사솔
Mie’s scattering theory%Tail plume plasma of spacecraft%Particle scattering%Complex refractive index
基于Mie散射理论和方法，研究了航天器尾喷焰等离子体中Al2O3粒子的光学散射特性，分析了复折射率对单个Al2O3粒子消光效率因子、散射效率因子、吸收效率因子、散射相函数以及单次反照率的影响。同时，基于多分散系粒子尺度单峰分布，分析了Al2O3粒子按粒径分布后散射场的有关效应因子及散射相函数的变化，并进行了相应的数值模拟。理论和数值模拟研究表明，航天器尾喷焰等离子体Al2O3粒子复折射率的虚部和实部、粒径的大小与分布对其散射相函数、消光和散射效率因子以及单次反照率均有明显的影响。
基于Mie散射理論和方法，研究瞭航天器尾噴燄等離子體中Al2O3粒子的光學散射特性，分析瞭複摺射率對單箇Al2O3粒子消光效率因子、散射效率因子、吸收效率因子、散射相函數以及單次反照率的影響。同時，基于多分散繫粒子呎度單峰分佈，分析瞭Al2O3粒子按粒徑分佈後散射場的有關效應因子及散射相函數的變化，併進行瞭相應的數值模擬。理論和數值模擬研究錶明，航天器尾噴燄等離子體Al2O3粒子複摺射率的虛部和實部、粒徑的大小與分佈對其散射相函數、消光和散射效率因子以及單次反照率均有明顯的影響。
기우Mie산사이론화방법，연구료항천기미분염등리자체중Al2O3입자적광학산사특성，분석료복절사솔대단개Al2O3입자소광효솔인자、산사효솔인자、흡수효솔인자、산사상함수이급단차반조솔적영향。동시，기우다분산계입자척도단봉분포，분석료Al2O3입자안립경분포후산사장적유관효응인자급산사상함수적변화，병진행료상응적수치모의。이론화수치모의연구표명，항천기미분염등리자체Al2O3입자복절사솔적허부화실부、립경적대소여분포대기산사상함수、소광화산사효솔인자이급단차반조솔균유명현적영향。
Based on the Mie’s scattering theory, the light scattering characteristic of Al2O3 tail plume plasma for a spacecraft was studied. Influences of the complex refractive index on the extinction efficiency factor, scattering efficiency factor, absorb efficiency factor, scattering phase function and the single-scattering albedo of an Al2O3 particle were analyzed by using the Mie’s scattering theory. Meanwhile, based on the particle scale unimodal distribution with a polydispersity, the changes of the concerned effect factors and the scattering phase function were analyzed with considering the Al2O3 particle size, and some numerical simulations were also given. The theoretical and numerical simulation studies show that the imaginary and real part of the refractive index of the Al2O3 particles, the radius and its distribution of the particles bring out great effect on the scattering phase function, extinction and scattering efficiency factors and single-scattering albedo.
