水平槽道气固两相湍流边界层的PIV测量  

EXPERIMENTAL INVESTIGATION ON TURBULENCE MODULATION IN THE BOUNDARY LAYER OF A HORIZONTAL PARTICLE-LADEN CHANNEL FLOW

作　　者：栗晶[1] 柳朝晖[1] 王汉封[1] 卢兴[1] 郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《工程热物理学报》2008年第7期1155-1158,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究专项经费(No.2002CB211600);国家自然科学基金(No.50576027);教育部新世纪创新人才计划资助项目(No.NCET-04-0708)

摘　　要：本文运用粒子图像速度场测量仪(PIV)对水平槽道气固两相湍流边界层进行研究。实验雷诺数为Re_γ=444,选用两种粒径分别为60μm和110μm的聚乙烯颗粒作为固相,质量载荷控制在1×10^(-3)。实验结果表明即便在较低载荷下,固相颗粒的存在仍然能比较明显地改变边界层的湍流属性以及拟序结构,而且可以发现在近壁面颗粒会削弱流向的湍流强度以及雷诺剪切应力。Turbulent modulation in the turbulent boundary layer of a horizontal particle-laden chan- nel flow was experimentally investigated using particle image velocimetry(PIV).Experiments were performed at Re_γ=444.The polythene beads of two sizes with 60μm and 110μm in diameter were used as dispersed phase,and the mass loading was 1×10^(-3).The experimental results show that the turbulent properties and coherent structures can be significantly modulated by dispersed phase even for a very low mass loading,and the ...

关 键 词：PIV 湍流调制 水平槽道 气固两相流 边界层 

分 类 号：O357.5[理学—流体力学]