化工学报2011，Vol.62Issue(7)：1873-1878,6.DOI:10.3969/j.issn.0438-1157.2011.07.013
超超临界锅炉水冷壁节流孔板垢物沉积问题的数值研究
Numerical study on deposition problem of orifices in waterwalls of ultra-supercritical boilers
汤妍 1周克毅 1韦红旗 1徐啸虎 1黄军林1
作者信息
- 1. 东南大学能源与环境学院,江苏,南京,210096
- 折叠
摘要
Abstract
In order to solve the overheating and tube failure problems caused by deposits accumulated on the orifices in waterwalls of ultra-supercritical boilers, numerical models of a sample orifice are established based on the FLUENT platform after the analysis on the deposition mechanism. A detailed description of the flow field near the orifice is obtained with the help of the vector plots and the pressure contours. Trajectories and concentration distributions of particles injected from different sites are calculated and analyzed. The results indicate that precipitation and deposition of magnetite caused by the sharp pressure drop near the orifice surface is the main reason for the deposition problem.关键词
超超临界/节流孔板/垢物沉积/磁性氧化铁/数值模拟Key words
ultra-supercritical/ orifice/ deposition/ magnetite/ numerical simulation分类
能源科技引用本文复制引用
汤妍,周克毅,韦红旗,徐啸虎,黄军林..超超临界锅炉水冷壁节流孔板垢物沉积问题的数值研究[J].化工学报,2011,62(7):1873-1878,6.
