Evaluation the effect of fiber alignment on particle collection performance of mechanical/electret filters based on Voronoi tessellations

Theoretical Model of Single Fiber Efficiency and the Effect of Microstructure on Fibrous Filtration Performance: A Review

“…Second, different fiber orientations have different effects on the filtration mechanism. Figure d shows that the effect of through-plane fiber orientation on interception and the inertial impaction filtration mechanism is greater than that on diffusion efficiency …”

“…According to the cell model flow field theory, the following expression of electrostatic filtration efficiency is derived by Brown where K In is defined by On the basis of the viscous flow field theory, Natanson proposed the filtration efficiency expression as follows Kanaoka obtained the theoretical expression for predicting the filtration efficiency of a single fiber considering the interaction of diffusion and electrostatic mechanism The theoretical collection efficiencies of a single electret fiber were calculated taking into account of effects of both induced and Coulombic forces by EMI . A semiempirical expression can be written as Cai utilized the method of the hybrid lattice Boltzmann Lagrangian to simulate the fiber orientation, Ω Z , effect on the filtration performance of the electret filters. It can be seen from Figure that the fiber orientation has little effect on the filtration efficiency of all particle sizes.…”

“…Effect of different fiber orientations on filtration performance of electret filters. Figure reproduced with permission from ref . Copyright 2019 Elsevier.…”

Influence of molecular weight, temperature, and extensional rheology on melt blowing process stability for linear isotactic polypropylene

“…For example, in the field of filtration (i.e. for HVCA filters, HEPA filters, ULPA filters, medical face-mask, respiratory filters and dry and liquid aerosol filters), the presence of highly non-uniform fibers is intolerable because large fiber diameter changes lead to a wider pore size distribution and formation of more anisotropic structures, which reduces the mechanical and filtration properties of nonwovens [58,59].…”

“…However, the online version of record will be different from this version once it has been copyedited and typeset. 7 (b) in [54] (see supplementary material [45]) 29 e digitized from the histogram visualized in Figure 6 in [55] (see supplementary material [45]) f taken from the Figure 3 in [16] g taken from the Figure 8.13 in [59] Figure 1 Scheme of the meltblown process. [62,63] This is the author's peer reviewed, accepted manuscript.…”