Effect of heat-source geometry on distribution and deposition of particulates in a ventilated chamber  

作　　者：Xi Chen 

机构地区：[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

出　　处：《Particuology》2018年第1期174-184,共11页颗粒学报（英文版）

摘　　要：To investigate the effect of near-wall heat-source shape on particulate motion, the particulate distribu~ tion 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.To investigate the effect of near-wall heat-source shape on particulate motion, the particulate distribu~ tion 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.

关 键 词：Particle deposition Particle distribution Near-wall heat source Computational fluid dynamicsLagrangian method 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论] TU831.7[自动化与计算机技术—计算机科学与技术]