"Particle deposition in ventilation ducts: A review" by Hao Lu and Yuanhao Wang

Building Simulation: An International Journal

Article Title

Particle deposition in ventilation ducts: A review

Authors

Hao Lu, Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering,
Yuanhao Wang, Faculty of Science and Technology, Technological and Higher Education Institute of Hong Kong, New Territories, Hong Kong, China

Keywords

particle deposition, turbulent duct flow, inclination angle, thermophoresis, electrophoresis, surface ribs

Abstract

This paper reviewed particle deposition behaviors and mechanisms in turbulent ventilation duct flows. The main theoretical prediction models, experimental techniques and numerical methods used to explore particle deposition were discussed and analyzed. It was observed that turbophoresis, Brownian diffusion, turbulent diffusion and gravitational settling are the main mechanisms of particle deposition in smooth duct flows. The important factors influencing particle deposition behaviors and mechanisms are duct inclination angle, thermophoresis, electrophoresis and surface ribs. Numerical simulation was shown to be the main tool used to investigate complex particle deposition in turbulent duct flows. However, it is necessary to develop accurate experimental measures of particle deposition in complex turbulent duct flows.