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Abstract：
This work presents a novel approach to investigating the slip effect in nanofiber filter media. Electrospun nanofiber media with high efficiency and low pressure drop were produced at different concentrations and durations. The surface and cross-sectional morphology of nanofiber media were studied using FE-SEM. Fiber orientation and diameter distributions were also examined. The 3D virtual nanofiber media was modeled using this information along with the experimentally measured porosity and thickness of the media. The effect of the slip phenomenon in nanofiber media was studied numerically, and the results were compared to experimental data. Excellent agreements were found between the measured and simulation results. Additionally, filtration simulations considering aerosols injected with airflow through the nanofibrous filter media were conducted by considering the slip effect, and the effect of filter structure on filtration performance (removal efficiency and pressure drop) was investigated.
摘要：
这项工作提出了一种研究纳米纤维过滤介质中滑移效应的新方法。在不同浓度和持续时间下制备了具有高效率和低压降的电纺纳米纤维介质。使用FE-SEM研究了纳米纤维介质的表面和横截面形态。还检查了纤维取向和直径分布。使用该信息以及实验测量的介质的孔隙率和厚度对3D虚拟纳米纤维介质进行建模。数值研究了纳米纤维介质中滑移现象的影响，并将结果与实验数据进行了比较。在测量结果和模拟结果之间发现了极好的一致性。此外,考虑到通过纳米纤维过滤介质注入气流的气溶胶的过滤模拟，通过考虑滑移效应进行，研究了过滤器结构对过滤性能(去除效率和压降)的影响。
