Effect of heat-source geometry on distribution and deposition of particulates in a ventilated chamber
Effect of heat-source geometry on distribution and deposition of particulates in a ventilated chamber
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热源几何形状对通风室中颗粒分布和沉积的影响
DOI：
10.1016/j.partic.2017.03.004
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发表时间：
2018-02-01
期刊：
影响因子：
3.5
通讯作者：
Chen, Xi
中科院分区：
文献类型：
--
作者：
Chen, Xi
为了研究近壁热源形状对颗粒运动的影响，对不同热源配置的通风室内颗粒的分布和沉积进行了数值模拟。利用拉格朗日方法的离散随机游走模型，跟踪了3200个密度为1400 kg/m(3)、范围为1 ~ 10 μ m的单分散颗粒的轨迹。计算并展示了气流模式、温度场、颗粒浓度分布和沉积模式。结果表明，近壁热源的形状会影响腔内的气流和温度场，从而影响颗粒的分布和沉积。(C) 2017年中国粒子学会、中国科学院过程工程研究所。Elsevier B.V.版权所有。
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 mu m with a density of 1400 kg/m(3) 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. (C) 2017 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.