Numerical Simulations on the Formation of Speckles in Nanofluids Illuminated by a TEM00 Laser Beam  

作　　者：严琴 钱明 倪晓武 陆建 李强 宣益民 

机构地区：[1]Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094 [2]School of Power Engineering, Nanjing University of Science and Technology, Nanjing 210094

出　　处：《Chinese Physics Letters》2009年第4期100-103,共4页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 50436020.

摘　　要：On the basis of a Rayleigh scattering model for a single nanoparticle illuminated by a TEMoo laser beam, we theoretically and numerically study the speckle formation when nanofluids are illuminated by a TEMoo laser beam. The results show that the laser speckles possess a Gaussian distribution, which are in agreement with the experimental results. The results may be useful for using a laser speckle velocimetry to determine the velocitiies of nanoparticles in nanofluids.On the basis of a Rayleigh scattering model for a single nanoparticle illuminated by a TEMoo laser beam, we theoretically and numerically study the speckle formation when nanofluids are illuminated by a TEMoo laser beam. The results show that the laser speckles possess a Gaussian distribution, which are in agreement with the experimental results. The results may be useful for using a laser speckle velocimetry to determine the velocitiies of nanoparticles in nanofluids.

分 类 号：TN247[电子电信—物理电子学] TK124[动力工程及工程热物理—工程热物理]