Abstract

The deposition of aerosol particles in a filter composed of fibers coated with highly porous layers of radially oriented needles and the deposition of needle-coated particles onto smooth fibers have been studied. The Stokes flow fields in a model row of parallel fibers and near an individual needle-coated spherical particle have been calculated. A correction to the Stokes force for the drag of the layer of needles covering the particle has been found. The forces of the van der Waals interaction of the needles with the particle and the fiber have been calculated within the framework of the additive approximation, and the conditions have been determined under which the needles hinder particle deposition onto the fibers.

中文翻译：

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位于纤维和颗粒上的纳米针对气溶胶过滤效率的影响

摘要

已经研究了气溶胶颗粒在过滤器中的沉积，该过滤器由涂有径向取向针的高度多孔层的纤维组成，以及针涂层颗粒在光滑纤维上的沉积。已经计算了平行纤维模型行中和单个针涂球形颗粒附近的斯托克斯流场。已经发现对覆盖颗粒的针层的阻力的斯托克斯力的修正。针与颗粒和纤维的范德华相互作用力已经在加法近似的框架内计算出来，并且已经确定了针阻碍颗粒沉积到纤维上的条件。