摘要
基于几何光学近似模型(GOM)对大气泡粒子散射特性进行了分析.针对散射角的多值问题进行了研究,并对不同三角函数的求解方法进行了分析,提出了一种基于tan(θp2)函数和MATLAB中的fsolve(.)函数的遍历取值的简便准确求解方法,计算了球形的大气泡粒子和水粒子的总散射光强分布、近场和远场散射相位分布,并与Mie理论计算进行了比对,计算结果与Mie理论计算吻合很好,验证了算法的正确性.
Scattering properties of large air bubbles were analyzed by means of geometrical optics approximation model （GOM）. The problem of multi-value scattering angle was studied, the solving methods for different trigono-metric functions were analyzed, and then a simple and accurate method of traversal value based on the functions of tan（Op/2） and fsolve （.）in MATLAB was presented. The total scattering intensity distribution pattern and the phase functions in both near-field and far-field of large spherical air bubbles and water particles were given and then com-pared with those of Mie theory. The algorithm was verified by the consistency of the two results.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2012年第12期1089-1095,共7页
Journal of Tianjin University(Science and Technology)
基金
国家自然科学基金资助项目(40876050)
内燃机燃烧学国家重点实验室2011年度开放课题资助项目(K2011-10)
关键词
几何光学近似模型(GOM)
光强分布
相位函数
散射角
geometrical optics approximation model
intensity distribution
phase function
scattering angle
