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一维参与性介质内瞬态矢量辐射传输的自然元数值研究

发表时间:2017-01-15  浏览量:1491  下载量:283
全部作者: 张勇,易红亮,谈和平
作者单位: 哈尔滨工业大学能源科学与工程学院
摘 要: 建立脉冲激光作用下,非均匀参与性介质内瞬态矢量辐射传输的自然元法(natural element method,NEM)求解模型,实现了瞬态过程平行光和漫射光Stokes矢量的同时NEM求解。首先,通过对Mie散射介质内瞬态矢量辐射传输进行模拟,并将计算得到的不同时刻Stokes矢量分布曲线与蒙特卡洛法(Monte Carlo method,MCM)计算结果进行对比,验证了该模型具有高精度、高计算效率的特点。在此基础上,对脉冲激光辐照作用下“大气-海洋”两层系统内矢量辐射传输过程开展数值研究,分析Stokes矢量及其时域反射信号和偏振特性的时变特征。
关 键 词: 传热学;参与性介质;矢量辐射;脉冲激光;自然元法
Title: Natural element method for transient vector radiative transfer in one-dimensional scattering media
Author: ZHANG Yong, YI Hongliang, TAN Heping
Organization: School of Energy Science and Engineering, Harbin Institute of Technology
Abstract: In this work, a natural element method (NEM) model for the polarized light propagation model in one-dimensional scattering medium with short-pulsed laser irraditaion is established. The NEM of parallel light and diffuse Stokes vector in the transient process was realized simultaneously. Firstly, a square short-pulsed laser transport in the atmosphere with Mie scattering is simulated. The distributions of Stokes vector at different time obtained by the present method compare well with those by Monte Carlo method (MCM) which shows that the NEM is accurate and effective in solving transient polarized radiative transfer. Afterwards, the transient polarized radiative transfer problem in the atmosphere-ocean two-layer system with short-pulsed irradiation is investigated. The Stokes vector, time-resolved reflected signals and the polarization state of the Stokes vector are presented and analyzed.
Key words: heat transfer; participant media; vector radiative; short-pulsed laser; natural element method
发表期数: 2017年1月第1期
引用格式: 张勇,易红亮,谈和平. 一维参与性介质内瞬态矢量辐射传输的自然元数值研究[J]. 中国科技论文在线精品论文,2017,10(1):41-48.
 
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