考虑细胞微结构的球形微藻辐射特性预测  

Prediction of Radiation Characteristics of Spherical Microalgae Considering Cell Microstructure

作　　者：李兴灿[1] 吕金源 刘坐东[1] 徐志明[1] LI Xingcan;LÜJinyuan;LIU Zuodong;XU Zhiming(College of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学能源与动力工程学院,吉林132012

出　　处：《工程热物理学报》2025年第4期1316-1322,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.52106080)。

摘　　要：建立了非均质球形微藻模型,首次采用微藻成分的光学常数表征微藻细胞微结构的光学常数,采用多球T矩阵法计算了非均质模型的辐射特性。测量了小球藻的辐射特性来验证理论计算。与基于等效介质理论的均质球模型相比,考虑了内部微结构的非均质模型的计算精度在400∼750 nm光谱范围提高了16%,并且散射相函数更接近实验结果。此外,依据微藻成分确定模型微结构的光学常数时,辐射特性理论计算的精度远高于选用固定值作为光学常数的微藻模型。A heterogeneous spherical microalgae model was established,and for the first time,the optical constants of microalgae components were used to characterize the optical constants of microal-gae cell microstructure.The radiation characteristics of the heterogeneous model were calculated using the multi sphere T-matrix method.The radiation characteristics of Chlorella vulgaris were measured to verify the theoretical calculations.Compared with the homogeneous sphere model based on the equivalent medium theory,the calculation accuracy of the heterogeneous model considering internal microstructure has been improved by 16%in the spectral range of 400-750 nm,and the scattering phase function is closer to the experimental results.In addition,when determining the op-tical constants of the model microstructure based on the composition of microalgae,the accuracy of the theoretical calculation of radiation characteristics is much higher than that of microalgae models that use fixed values as optical constants.

关 键 词：辐射特性 小球藻 微结构 T矩阵 

分 类 号：TK124[动力工程及工程热物理—工程热物理]