Effects of participating media on the time-resolved infrared measurements of wall temperature in a coal-fired combustor
- 作者：Dong Liu ; Yuan-Yuan Duan ; yyduan@tsinghua.edu.cn ; Zhen Yang
- 关键词：Participating media ; Tube wall temperature ; Infrared measurement ; Time-resolved measurement
- 刊名：Experimental Thermal and Fluid Science
- 出版年：2012
- 期刊代码：28_08941777
- 类别：ce
- 出版时间：May, 2012
- 卷：39
- 期：Complete
- 页码：90-97
- 文件大小：1427 K
摘要
The infrared temperature fluctuations on a plate in a coal-fired combustor were measured and the effects of participating media on infrared measurement were revealed. The experimental results were analyzed in both the time and frequency domains. It is found the fluctuations have both random and periodic characteristics. The periodic frequency is identified to be caused by vortex shedding of the gas-particle two-phase flow around a cylinder. This conclusion is supported by a numerical analysis.