Abstract
This paper studied the ability and accuracy of a commonly used Reynolds-averaged Navier-Stocks (RANS) turbulence model, i.e. RNG κ-ε model combined with a Lagrangian discrete random walk (DRW) model to predict particle deposition in vertical and horizontal turbulent duct flows. The performance of RNG κ-ε mode in its original form and with near-wall correction was tested. A new and simple correction measure to turbulence kinetic energy was proposed for RNG κ-ε model. It was found that RNG κ-ε model greatly over-predicts the deposition velocity in its original form. The near-wall modification proposed in this paper is able to improve the simulation results on deposition. With the near-wall correction measure, RNG κ-ε model can reflect the V-shape deposition of micro- and nanometer particles.
Original language | English |
---|---|
Title of host publication | 7th International Symposium on Heating, Ventilating and Air Conditioning - Proceedings of ISHVAC 2011 |
Pages | 547-552 |
Number of pages | 6 |
Volume | 2 |
Publication status | Published - 1 Dec 2011 |
Event | 7th International Symposium on Heating, Ventilating and Air Conditioning, ISHVAC 2011 - Shanghai, China Duration: 6 Nov 2011 → 9 Nov 2011 |
Conference
Conference | 7th International Symposium on Heating, Ventilating and Air Conditioning, ISHVAC 2011 |
---|---|
Country/Territory | China |
City | Shanghai |
Period | 6/11/11 → 9/11/11 |
Keywords
- Lagrangian discrete random walk method
- Near-wall correction
- Particle deposition
- RNG κ-ε mode
ASJC Scopus subject areas
- Environmental Science (miscellaneous)