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本文建立光学实验测试系统,测量了不同温度条件下罗丹明B在不同粒子体积份额的纳米流体(Cu-乙二醇和Cu-水)中的质扩散系数。实验结果表明;罗丹明B在纳米流体中的扩散系数大于其在基液中的扩散系数,且扩散系数随着粒子体积份额的增大而增大;当粒子体积份额一定时,扩散系数随着温度的升高而增大。
In this paper, an optical experimental test system was set up to measure the mass diffusion coefficients of rhodamine B in different particle volume fractions of nanofluids (Cu-ethylene glycol and Cu-water) under different temperatures. The experimental results show that the diffusion coefficient of rhodamine B in nanofluids is larger than its diffusion coefficient in the base fluid, and the diffusion coefficient increases with the increase of the volume fraction of particles. When the volume fraction of particles is constant, The temperature increases and increases.