The influence of soot nanoparticles on the micro/macro-scale behaviour of coalescing filters

Aerosol-mist coalescing filters – A review

“…The work by Mead-Hunter et al [72] also found that soot was present on a fibre after a droplet had moved along (drained from) the fibre, suggesting that a small amount of soot may stick to the fibre during filtration, offering a potential reason for the soot accumulation noted by Bredin et al [18].…”

“…Additionally, the oil that drained from the filter was found to have a lower soot concentration than the aerosolised oil introduced to the filter, suggesting that some accumulation of soot occurs within the filter. The influence of the presence of soot in oil on filter performance was investigated further by Mead-Hunter et al [72]. This work considered single fibres loaded with soot-in-oil aerosol and measured the force required to move the droplets.…”

“…Thus, the oil-soot system (as occurs in aerosols generated from diesel engine crankcases), which when aerosolised form small oil droplets which contain soot particles, can be said to form a colloid aerosol. This definition was introduced in Mead-Hunter et al [72].…”

“…The work of Hotz et al [51] also presented a model for predicting the detachment force, which incorporates a contact angle, as opposed to the model offered by Mullins et al [86], which did not due to difficulties in determining contact angles. It has since been found that contact angles on a flat plate, offer a sufficient approximation to allow models involving contact angles to be employed Mead-Hunter et al [72].…”

“…Droplet detachment measurements [51], expressed in terms of a drag correlation as defined by Dawar and Chase [35]. and Mead-Hunter et al [72], where a number of surface asperities can be seen.…”