摘要
为深入了解高温烟气绕分流器的流动特性,研究烟气是否会直接冲刷换热管。利用粒子图像测速(particle imagevelocimetry,PIV)技术对高温烟气绕分流器的流动特性进行了实验研究,实验选取烟气中的高温颗粒(粒径约为5 m)为示踪粒子,得到清晰的瞬时速度分布图。通过分析不同负荷下烟气速度场发现,当射流出口速度达到22 m/s时,烟气射流具有较好刚性,烟气不会直接冲刷换热管。
In order to understand flow characteristics of high-temperature flue gas through shunt,this paper researched that whether flue gas would directly scour heat exchange tube.Flow characteristics of high-temperature flue gas around shunt were experimentally studied by particle image velocimetry.High-temperature particles（about 5 m diameter） of fuel gas was used as tracer particles in experiment,instantaneous velocity distribution was obtained.By analyzing flue gas velocity field with different load,when jet velocity is 22 m/s,flue gas jet has higher rigidity,and flue gas would not directly scour heat exchange tube.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2013年第20期74-79,14,共6页
Proceedings of the CSEE
基金
国家重点基础研究发展计划项目(973计划)(2012CB214906)
中央高校基本科研业务费专项项目(2011FZA4014)~~
关键词
分流器
颗粒图像测速
热态流场
水煤浆
shunt
particle image velocimetry （PIV）
hotflow field
coal-water slurry
