泡沫镍孔尺度辐射传递加速模拟研究  

Simulation Study on Accelerated Pore-Scale Radiative Transfer of Ni Foam

作　　者：李洋[1] 夏新林[1] 陈学[1] 刘博[1] 谈和平[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《光学学报》2016年第11期277-283,共7页Acta Optica Sinica

基　　金：国家自然科学基金重点项目(51536001);基础科研项目(B2320132001)

摘　　要：利用计算机断层扫描技术获取了泡沫镍的重建结构,将蒙特卡罗法与八叉树算法结合进行泡沫镍孔尺度辐射传递建模,分析了八叉树算法对辐射传递计算的加速作用。结果表明,采用八叉树算法的辐射特性计算值与未采用时相比,最大相对误差小于1‰。在最优空间深度范围内,空间深度越大和模型面元越多,计算的加速效果越明显。The computed tomography technique is employed to reconstruct the structure of Ni foam,and the Monte Carlo method in combination with the octree algorithm to model the pore-scale radiative transfer of Ni foam.The accelerating effect of the octree algorithm on the radiative transfer is analyzed.The results indicate that the maximum relative error of the calculation value of radiative property between with and without the octree algorithm is less than1‰.Within the range of optimal spatial depth,the larger the spatial depth and the more the model element is,the more obvious the accelerating effect in computation is.

关 键 词：表面光学 辐射 计算效率 八叉树算法 蒙特卡罗法 泡沫镍 孔尺度 

分 类 号：TK124[动力工程及工程热物理—工程热物理]