Deposition characteristics of tube bundles in particulate cross-flow

被引：1
作者：
Tang, Chan [1 ,2 ]
Zhang, Jingzhou [3 ]
机构：
[1] College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing
[2] College of Energy and Power Engineering, Nanjing Institute of Technology, Nanjing
[3] Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2015年 / 46卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Ash particles; Deposition model; Gas-solid two-phase flow; Numerical simulation; Tube bundles;
D O I：
10.11817/j.issn.1672-7207.2015.12.039
中图分类号：
学科分类号：
摘要：
Based on Euler-Lagrangian particle tracking module and dry particle deposition mechanism, a numerical simulation was made to predict the fine-particle deposition on the tube bundles with 3×3 array arrangement in a particulate cross-flow by using Fluent-CFD software and user-defined functions (UDFs), taking particles transport, sticking and detachment processes into consideration. The results show that when the particle diameter or inlet gas velocity increases, the particle impact efficiency on the tube-bundles is enhanced while the sticking efficiency is weakened. In relation to small particles, the deposition rate of the large particles is greatly influenced by the arrangement of tube bundles. For larger particles, although the impact capacity is significantly enhanced, almost no deposition occurs. © 2015, Central South University of Technology. All right reserved.
引用
收藏
页码：4679 / 4685
页数：6
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