Particle Deposition Mechanisms: Diffusion to a Cylinder

Direct Interception Limit

Fiber Efficiency/Filter Efficiency

The efficiency of a fibrous filter is directly related to the single fiber efficiency. For a regular array shown in Figure 5, the decrease of concentration in a length dz is given by

(23)

Figure 5. Schematics of gas flow through a fiber filter.

where  is the fraction of solid (fibers).