class="kwd-title">Method name: DGM and tracer experiment method for obtaining the Knudsen diffusion coefficient class="kwd-title">Keywords: Knudsen diffusion coefficient, Dusty gas model, Tracer experiment, Inversion simulation, Binary gas system class="head no_bottom_margin" id="abs0015title">AbstractRecently, we developed a method for obtaining the Knudsen diffusion coefficient from the results of tracer experiments with a binary gas system and a porous medium in a column. The developed method employs dusty gas model (DGM) equations that consider molecular diffusion, nonequimolar fluxes, and Knudsen diffusion. The equations derived from the DGM equations for the calculation of the Knudsen diffusion coefficient can also be used to obtain the molecular diffusion coefficient and the ratio of the Knudsen diffusion coefficients of the two chemicals composing the binary gas system. We performed an inversion simulation to fit the advection–diffusion equation to the distribution of molar fractions determined by mathematically solving the advection–diffusion equation. The results confirmed that our method of obtaining the Knudsen diffusion coefficient from tracer experiment results yielded accurate values.
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机译：<！-fig ft0-> <！-fig @ position =“ position” anchor“ == f4-> <！-fig mode =” anchred“ f5-> <！-fig / graphic | fig / alternatives / graphic mode =“ anchored” m1-> class =“ kwd-title”>方法名称：用于获得Knudsen扩散系数的DGM和示踪剂实验方法 class =“ kwd-title” >关键字： Knudsen扩散系数，Dusty气体模型，Tracer实验，反演模拟，二元气体系统 class =“ head no_bottom_margin” id =“ abs0015title”>摘要最近，我们开发了一种方法通过使用二元气体系统和色谱柱中的多孔介质的示踪剂实验结果获得Knudsen扩散系数。所开发的方法采用考虑了分子扩散，等摩尔通量和Knudsen扩散的尘土气体模型（DGM）方程。从DGM方程式导出的用于计算Knudsen扩散系数的方程式还可以用于获得组成二元气体系统的两种化学物质的分子扩散系数和Knudsen扩散系数的比率。我们进行了一次反演模拟，以使平流扩散方程式适合通过数学求解平流扩散方程式确定的摩尔分数分布。结果证实，我们从示踪剂实验结果获得克努森扩散系数的方法得出了准确的值。
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