Distribution and penetration efficiency of cylindrical nano-particles with length of 160 nm and aspect ratio between 2 and 16 are studied numerically in turbulent flows through a curved tube in the range of Reynolds number from 4500 to 43000, Stokes number from 0.002 to 0.026, Dean number from 1428 to 2884. The distributions of particle number concentration and particle orientation on the cross-section at different axial positions and outlet are given and analyzed. The effect of various parameters on the penetration efficiency is discussed. The results showed that the extend of non-uniformity of the distribution of particle number concentration increases with increasing the Stokes number, Dean number, Reynolds number and particle aspect ratio. More particles align with their major axis near to the flow direction with the increase of the Stokes number and particle aspect ratio, than with the decrease of the Dean number and Reynolds number. The penetration efficiency increases as the Dean number, Reynolds number and particle aspect ratio decrease. However, the penetration efficiency is not a monotonic function of the Stokes number. The penetration efficiency increases and decrease with increasing the Stokes number when St <0.02 and St >0.02, respectively. Finally, the relationship between the penetration efficiency and related synthetic parameters is established based on the numerical data.

在流经弯曲管的湍流中，雷诺数为4500至43000，斯托克斯数为0.002至0.026，迪安，对长度为160 nm，纵横比为2到16的圆柱纳米粒子的分布和穿透效率进行了数值研究。给出了从1428到2884的颗粒数。给出并分析了横截面在不同轴向位置和出口处的颗粒数浓度和颗粒取向分布。讨论了各种参数对渗透效率的影响。结果表明，随着斯托克斯数，迪安数，雷诺数和长径比的增加，颗粒数浓度分布的不均匀性扩大。与斯托恩斯数和雷诺数的减少相比，随着斯托克斯数和粒子长宽比的增加，更多的粒子在其长轴附近接近流向。随着迪安数，雷诺数和长径比的减小，渗透效率增加。但是，穿透效率不是斯托克斯数的单调函数。当St <0.02和St> 0.02时，渗透效率随斯托克斯数的增加而增加和减少。最后，基于数值数据建立了渗透效率与相关综合参数之间的关系。雷诺数和颗粒纵横比降低。但是，穿透效率不是斯托克斯数的单调函数。当St <0.02和St> 0.02时，渗透效率随斯托克斯数的增加而增加和减少。最后，基于数值数据建立了渗透效率与相关综合参数之间的关系。雷诺数和颗粒纵横比降低。但是，穿透效率不是斯托克斯数的单调函数。当St <0.02和St> 0.02时，渗透效率随斯托克斯数的增加而增加和减少。最后，基于数值数据建立了渗透效率与相关综合参数之间的关系。