Effect of heat-source geometry on distribution and deposition of particulates in a ventilated chamber |
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| Institution: | 1. School of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450001, Henan, China;2. Key Laboratory of Heating and Air Conditioning, The Education Department of Henan Province, Zhengzhou 450007, Henan, China;1. Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden;2. Pharmaceutical Development, AstraZeneca, Macclesfield SK10 2NA, UK;3. European Bioenergy Research Institute (EBRI), School of Engineering and Applied Science, Aston University, Birmingham B4 7ET, UK;4. AstraZeneca Pharmaceutical and Analytical R&D, Mölndal, SE-431 83 Mölndal, Sweden;5. Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK;1. School of Physics and Technology, University of Jinan, Jinan 250022, China;2. Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China;1. School of Chemical and Petroleum Engineering, Shiraz University, Shiraz, Iran;2. Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran |
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| Abstract: | To investigate the effect of near-wall heat-source shape on particulate motion, the particulate distribution and deposition in a ventilated chamber with different heat-source configurations were numerically modeled. Using the discrete random walk model of the Lagrangian method, the trajectories of 3200 mono-disperse particulates ranging from 1 to 10 μm with a density of 1400 kg/m3 were tracked. Airflow pattern, temperature fields, the distribution of particulate concentrations, and deposition patterns are calculated and presented. The results show that the shape of a near-wall heat source has an influence on the airflow as well as the temperature field in the chamber and hence affects the particulate distribution and deposition. |
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| Keywords: | Particle deposition Particle distribution Near-wall heat source Computational fluid dynamics Lagrangian method |
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