Note on the approximation of interceptional collection efficiencies

A numerical study of the effects of loading from diffusive deposition on the efficiency of fibrous filters

“…Much research has been undertaken into understanding the removal of particles by the mechanisms of interception, inertial impaction, gravitational capture and diffusional deposition for a clean filter and is now reasonably well understood. See for example Lee and Gieseke (1980), Fardi and Lui (1992), Ingham et al (1989), Harrop andStenhouse (1969), Pich (1973), Stechkina and Fuchs (1966), Zhu et al (2000)., Asgharian and Chenh (2002).…”

3-D simulation of particle filtration in electrospun nanofibrous filters

“…It can be seen that, while the numerical values do not always perfectly match, our CFD results are in close agreement with the predictions of the above semi-empirical correlations. Note that, unlike previous 2-D modeling studies in the literature (e.g., [6][7][8][11][12][13]36]), our modeling technique (and so the presented results) does not need any empirical correction factors, and is not limited to any special particle or fiber size range. This modeling work builds a foundation for our future studies on particle loading and filter lifecycle simulations.…”

Computational fluid dynamics simulation of aerosol transport and deposition

“…Particle collection due to interception and Brownian diffusion, as well as the slip effect at the surface of nanofibers, has been incorporated in the CFD calculations by developing customized C ++ subroutines that ran in the FLUENT environment. Particle collection efficiency and pressure drop of the above fibrous media were calculated and compared with analytical/empirical results from the literature [96][97][98][99][100]. The results showed good general agreement after incorporating the user defined functions with the existing empirical correlations.…”