A Computational Fluid Dynamics Study of Particle Penetration through an Omni-Directional Aerosol Inlet
| Autor: | Yingjie Tang, Bing Guo, Andrew R. McFarland |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
geography
geography.geographical_feature_category Materials science Meteorology business.industry Mechanics Penetration (firestop) Computational fluid dynamics Inlet Pollution Wind speed Volumetric flow rate Aerosol Root mean square Environmental Chemistry General Materials Science business Particle deposition |
| Zdroj: | Aerosol Science and Technology. 44:1049-1057 |
| ISSN: | 1521-7388 0278-6826 |
| Popis: | Computational fluid dynamics (CFD) was used to study aerosol penetration through the entrance section of a bell-shaped omni-directional ambient aerosol sampling inlet. The entrance section did not include either an insect screen or a large-particle pre-separator. Simulations of the flow field were carried out for wind speeds of 2, 8, and 24 km/h and a fixed exhaust flow rate of 100 L/min; and, particle tracking was performed for 2 to 20 μ m aerodynamic diameter particles. Penetration calculated from CFD simulations was in excellent agreement with experimental results from previous studies with the root mean square relative error between simulation and experimental data being 3.8%. CFD results showed that the most significant regional particle deposition occurred on the upwind side of a curved flow passage between two concentric axisymmetric shells of the inlet housing and that deposition at the leading edges of the shells and within the exhaust tube was far less significant. At a wind speed of 2 km/h, pen... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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