The Influence of Volume Surface Ratio of Rectangle Air-Conditioning Duct on Particle Deposition
This paper discusses particle deposition in rectangle air-conditioning duct using RSM (Reynold Stress Model) and random trajectory particle model. Particle with nominal diameters of 10-200μm are simulated at each of three nominal air speed: 4m/s, 6m/s and 8m/s, respectively, in the cross-section sizes of 160×120, 500×250, 1000×320mm. In simulation, the paper compares and analyzes the influence factors of particles deposition in volume surface ratio of the given duct. The results show that: 1) particle deposition velocity increases with volume surface ratio; 2) As the inlet air speed increasing, when the particles deposited to floor and vertical wall, the image of dimensionless deposition velocity Vs dimensionless relaxation time shows a coincident trend when the duct cross-section sizes are 500×250, 1000×320mm, but has great differences with the image of 160×120mm.
Dongye Sun, Wen-Pei Sung and Ran Chen
J. Zhang et al., "The Influence of Volume Surface Ratio of Rectangle Air-Conditioning Duct on Particle Deposition", Applied Mechanics and Materials, Vols. 71-78, pp. 3633-3638, 2011