5. Glossary

Coefficient d'épuration or protection factor; protection factor

Ratio of particle flow upstream of the separator to particle flow downstream.

Compactness; packing density or solidity

Ratio of fiber volume to volume of fibrous media.

Diamètre de Stokes; Stokes diameter

Diameter of a sphere with the same density and falling velocity as the particle in question.

Diamètre aérodynamique; aerodynamic diameter

Diameter of a sphere with density equal to 1 and the same limiting velocity of fall in a gas as the particle in question.

Diamètre thermodynamique (ou diffusionnel); thermodynamic diameter

Diameter of the sphere with the same Brownian diffusion coefficient as the particle...