Prticle Deposition by Diffusion and Interception from Boundary Layer Flows
| Autor: | S. K. Friedlander, R. Parnas |
|---|---|
| Rok vydání: | 1984 |
| Předmět: |
business.industry
Chemistry Mechanics Pollution Cylinder (engine) law.invention Volumetric flow rate Physics::Fluid Dynamics Boundary layer Optics law Physics::Accelerator Physics Environmental Chemistry Deposition (phase transition) General Materials Science SPHERES Streamlines streaklines and pathlines Interception Diffusion (business) business |
| Zdroj: | Aerosol Science and Technology. 3:3-8 |
| ISSN: | 1521-7388 0278-6826 |
| DOI: | 10.1080/02786828408958987 |
| Popis: | An expression for the interception efficiency is derived for particles in boundary layer flows over single spheres and cylinders. The analysis is carried out by determining the point of closest approach of a streamline to the collector surface. Particles with radii smaller than this distance on outlying streamlines will not be collected. The interception efficiency is the ratio of the volumetric flow within this streamline to the total flow swept out by the collector. Deposition by interception can be considered a limiting case of the diffusion of particles of finite diameter. Using a well-known transformation, the interception efficiency can be combined with theoretically based correlations for convective diffusion to permit estimation of deposition efficiencies over the whole range in which both diffusion and interception are important. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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