Abstract
The deposition of Brownian submicron aerosol particles of high density in fibrous filters with allowance for interception effect, influence of gravitational, van der Waals forces, and the gas slip on the surface of ultrafine fibers was considered. Based on the numerical solution of the equation of convective diffusion in the field of external forces, the capture coefficient was calculated as a function of particle size and density, the angle between the vectors of gravity force, and the face flow velocity. It was shown that, for descending flow, the radius of most penetrating dense particles appeared to be noticeably smaller than for the ascending flow.
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