颗粒图像测速技术应用于水煤浆高温烟气颗粒流场的实验研究  

Experimental Research on Flow Field of Coal-water Slurry High Temperature Flue Gas Particle with Particle Image Velocimetry

作　　者：薄煜[1] 黄镇宇[1] 陈乐[1] 张彦威[1] 周俊虎[1] 岑可法[1] 

机构地区：[1]能源清洁利用国家重点实验室(浙江大学),浙江省杭州市310027

出　　处：《中国电机工程学报》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)~~

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.

关 键 词：分流器 颗粒图像测速 热态流场 水煤浆 

分 类 号：TK47[动力工程及工程热物理—动力机械及工程]