【摘要】 本文介绍一种测量油喷嘴雾化场粒径分布的光散射方法。它是利用雾化粒子对入射光的吸收和散射特性 ,通过测量前向三角度上的散射光能 ,从而反演出雾化粒子的尺寸分布。为了快速、准确地反演出雾化粒子尺寸分布 ,本文推导出一种用于该问题的迭代算法。另外 ,在迭代算法的程序设计中还引入了矩阵理论及并行运算的思想 ,这使得计算光散射强度函数的运算速度得到大大的提高。文中最后发表了有关该算法的数值模拟结果 ,以及实际测量超声波喷嘴所产生的燃油雾化粒子尺寸分布的数据。更多还原

【Abstract】 In this paper an inverse approach to measure the diesel spray droplet distribution by light scattering has been presented.Based on Mie scattering theory,an iterative algorithm is developed to solve the Fredholm integral equation of the first kind.In order to make the calculation of light intensity rapidly,Matrix Theory and Parallel Action have been introduced.It has been also shown the results of both the numerical test and the practical application for measuring the diesel spray droplet distribution.更多还原