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颗粒在边界层内的输运特性对理解和调控颗粒沉积、煤粉燃烧等工业过程有重要的意义.本工作基于近年来发展的相选择性激光诱导击穿光谱(PS-LIBS)方法,对对冲火焰滞止面附近纳米颗粒的输运特性进行了高空间分辨率的解析;并利用颗粒系统群平衡的DSM方法和输运方程对颗粒的对流、扩散和热泳过程进行了数值研究,实验和计算结果吻合良好,表明现有的理论框架可定量预测金属氧化物纳米颗粒在边界层内的输运现象.“,”Particle transport phenomena in boundary layer is the fundamental issue for many industrial processes.Based on a recently development In-Situ laser diagnosis method named PS-LIBS (Phase Selective Laser-induced Breakdown Laser Spectroscopy), this work investigated the particle volume fraction in counterflow stagnation plane in a high spatial resolution.Furthermore, a DSM (Discrete-Section Model) method is applied to solve the population evolvement of the particle system.And the transport equation based on the diameter distribution is solved to examine and interpret the experimental data.The comparison shows that our current theoretical structure could predict the transport phenomena of metal oxide nanoparticles in the boundary layer in a satisfactory precision.