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作者应用扩散理论建立了包括粒子凝并效应在内的流动气溶胶在圆管中的浓度分布数学模型，导出在层流状态下气溶胶边壁损失率计算式，采用ＣＮＣ浓度仪、ＤＭＰＳ／Ｃ粒度仅对管道中亚微米气溶胶计数浓度和粒度分布进行了微机自动检测。理论与实验研究结果表明：气溶胶边坐损失率与扩散系数、重力沉降速度成正比，与管径成反比，而与边界层厚度无关。边壁损失率实验结果与理论值基本吻合。
Based on the theory of diffusion, the mathematical model of concentration distribution of aerosol in a circular tube, including the effect of particle condensation, was established. The formula for calculating the loss rate of aerosol in laminar flow was derived. The concentration of DMPS / C Particle Size The microcomputer-based automatic detection of submicron aerosol count concentration and particle size distribution in the pipeline was performed. Theoretical and experimental results show that the loss rate of aerosol sit-down is proportional to the diffusion coefficient and gravity settling velocity and inversely proportional to the diameter of the aerosol, but not to the thickness of the boundary layer. The experimental results of sidewall loss basically agree with the theoretical value.